Iqlab is the third rule of Noon Sakinah and Tanween. When a silent Noon (نْ) or Tanween is followed by the letter ب, the Noon changes into a hidden Meem (م) pronounced with a two-count nasal sound. Iqlab has only one trigger letter, which makes it the simplest of the four rules of Noon Sakinah and Tanween to recognise.

Also spelled Iqlaab, Ilqab or Eqlab in English transliterations.

What Does Iqlab Mean?

The word comes from the root q-l-b (قَلَبَ) — to overturn, to flip a thing onto its other side. The name is unusually literal here. Nothing is being softened, shortened or concealed: one letter is replaced by a different letter.

That single fact is worth pausing on, because it is what separates this rule from its three neighbours.

So the working definition to carry with you is this: a silent Noon before ب is read as a Meem — a Meem you hide rather than announce. Everything else on this page is detail hanging off that sentence.

The Iqlab Letters — Just One

Learners arrive here expecting a list, because Izhar has six letters and Idgham has six. This rule has one. There is no mnemonic to learn, no grouping to memorise and no exceptions to file away — which makes it the fastest rule in Tajweed to learn properly.

Why ب specifically, and why a Meem?

This is the part that turns a rule you memorise into a rule you understand, and it comes down to what your mouth can physically do.

The Noon is voiced and nasal: the tongue tip meets the gum line and air escapes through the nose. The Baa is a lip sound with a small explosion in it — the lips press shut, pressure builds, and the sound releases. Moving straight from a nasal front-of-tongue consonant into a pressurised lip consonant is awkward, and the Arabs did not do it.

Linguists call this place assimilation: a consonant shifting its point of articulation towards the one that follows it. It happens in English too — most speakers say “ten bags” with an M-like sound in the middle without ever being taught to. What Tajweed does is take that natural tendency and fix it as a precise, measured rule. You can see where each of these sounds is formed in our guide to the Makhraj of Arabic letters.

How to Spot Iqlab in the Mushaf

Most learners meet this rule twice: once in a lesson, and once again a week later when they open the Quran, see a Noon with no sukoon on it and a tiny letter floating above, and wonder what happened. This is the section that answers that.

Symbol spotter: see the difference in ten seconds

Switch between the three specimens below and tap the highlighted letter in each one. The first is an ordinary silent Noon; the second and third are Iqlab, with a Noon and with a Tanween.

One caveat worth knowing: this small-Meem notation is the convention of the Madinah Mushaf in the narration of Hafs, printed by the King Fahd Glorious Quran Printing Complex and followed by most editions in circulation today. Some regional prints mark it slightly differently. The rule does not change — only the ink does.

How to Pronounce Iqlab Correctly

Understanding this rule takes about a minute. Producing it correctly takes longer, because almost everyone makes the same mistake — and it is a mistake you cannot hear in your own mouth until someone points it out.

There is a shortcut here that most pages never mention. This sound is not new to you if you already know Ikhfaa: the hidden Meem here is produced with exactly the same mechanism as Ikhfaa Shafawi, the hiding of a silent Meem before a ب. Same lips, same gap, same two counts. Learn one and you have learned both — compare the two clips below.

Iqlab Rules: When It Applies

The trigger has no conditions attached to it: a silent Noon or a Tanween, followed by ب. That combination shows up in three shapes.

Iqlab vs the Other Noon Sakinah Rules

Four rules, one silent Noon, and the only thing that decides between them is the letter that comes next.

If you keep one sentence from this page, keep this one: Izhar reveals the Noon, Idgham erases it, Ikhfaa veils it — and Iqlab converts it. Three of the four rules decide how much of the Noon you hear. Only this one decides which letter you hear instead.

Interactive Practice: Find the Iqlab

Iqlab has one letter — but can you spot it inside a verse, with the other three rules competing for your attention? Ten questions, instant feedback, no sign-up.

Iqlab Examples from the Quran

Six short examples covering both word positions and all three Tanween endings. The Noon or Tanween is marked in blue, the ب in orange. Each clip is a few seconds of the continuous recitation of Sheikh Mahmoud Khalil Al-Husary — recited at normal pace, not word by word.

Two more worth knowing by heart, because they close dozens of ayat between them: سَمِيعٌۢ بَصِيرٌ and عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ. And inside a single word, the clearest example of all is أَنۢبِئْهُم — get this rule right once and it pays out across the whole Quran.

Common Mistakes to Avoid

Play: Catch the Iqlab Letter (Free Game)

Recognition under time pressure is a different skill from recognition on a page. Catch the letter that triggers the rule, dodge the rest, and see how long you last. It works on phones and tablets, and no account is needed.

Game not loading? Open it in a new tab · or browse all our free Arabic letter games.

Learn More

Iqlab is one of four rules that govern the silent Noon. Here’s what to study next:

All of them sit inside the wider set of Tajweed rules, and all of them are covered step by step in our Tajweed courses.

Frequently Asked Questions

May Allah beautify your recitation and accept it from you. 🤲

The Idgham letters are six: ي ، ر ، م ، ل ، و ، ن — gathered in the word Yarmaloon (يرملون). When a silent Noon (نْ) or Tanween is followed by one of them across two words, the Noon merges into that letter and disappears. Four of these letters carry a nasal sound (ghunnah); two — ل and ر — do not. Merging is the second of the four rules of Noon Sakinah and Tanween.

Also spelled Idghaam, Iddigham or Idgam in English transliterations.

What Is Idgham in Tajweed?

This is the point most English pages blur. The silent Noon is not pronounced faintly, quickly or softly. It is not pronounced at all. The letter that follows takes its place and is doubled, and the shaddah (ّ) you see printed over that letter in the mushaf is the visual signal that the merge has happened.

Read مِنْ رَبِّهِمْ and you will not hear min rabbihim with a small n. You will hear mir-rabbihim. The Noon has been absorbed and only the doubled Raa survives.

That distance principle is the whole logic. The nearer the next letter is to the Noon’s own articulation point — the tip of the tongue at the gum line — the less of the Noon survives. You can see where each sound is produced in our guide to the Makhraj of Arabic letters, and the six merging letters are all produced within a hair’s breadth of it.

Linguists describe the same phenomenon outside Tajweed entirely: it is regressive nasal assimilation, where a nasal consonant takes on the identity of the sound that follows it. Arabic simply codified it earlier and more precisely than most languages, as documented in the Encyclopedia of Arabic Language and Linguistics. This rule is not a religious convention layered on top of speech — it is how the mouth already wants to behave.

The 6 Idgham Letters (Yarmaloon)

Six letters trigger this rule, and Tajweed scholars never ask students to memorise them as a loose list. They are packed into one pronounceable word instead. Tap play on any row to hear the example in the recitation of Sheikh Mahmoud Khalil Al-Husary.

The mnemonic: يَرْمَلُونَ (Yarmaloon)

يَرْمَلُونَ

Every letter in Yarmaloon is one of the six: ي، ر، م، ل، و، ن. It is worth saying plainly, because the question comes up constantly — Yarmaloon is not an Arabic word with a meaning. It carries no translation and appears nowhere in the Quran. Scholars built it as a memory device, arranging the six letters into a shape the tongue can hold. Learn the word and the list is yours permanently.

One more detail worth noticing on the table above: the six letters do not behave identically. Four of them keep a nasal hum and two erase it completely — and separately from that, two of them let a trace of the Noon survive while four wipe it out entirely. Those are two different splits of the same six letters, and the next three sections take them one at a time.

Idgham With Ghunnah (Idgham Maal Ghunnah)

Four of the six letters keep the nasal sound alive after the merge: ي، ن، م، و. They are memorised through a second, smaller mnemonic — يَنْمُو (yanmoo), which unlike Yarmaloon is a real word meaning “it grows”.

The ghunnah here lasts two counts — roughly the time it takes to say two short vowels, or to tap your finger twice at a steady pace. It is held on the new doubled letter, not on the vanished Noon.

Ghunnah timer: see the two counts

Two counts is easy to read and hard to feel. Press Play to hear the ayah recited by Sheikh Al-Husary, then press 2 counts and hold the hum yourself while the bar fills. The first example carries the nasal sound; the second has none at all. Alternate between them until the difference is obvious to your ear without looking at the screen.

Idgham Without Ghunnah (Idgham Bila Ghunnah)

Two letters only: ل and ر. Here the merge is total. The Noon is gone, and so is every trace of nasal sound with it — the reader moves straight into a doubled Laam or a doubled Raa as if the Noon had never been written.

The exception: مَنْ رَاقٍ

One phrase in the Quran meets every condition for merging into ر and still is not merged. In Surah Al-Qiyamah 75:27, the recitation of Hafs places an obligatory brief pause — a saktah — between the two words. The pause breaks the contact between them, so the Noon is pronounced clearly instead.

Listen for the tiny catch before رَاقٍ. It is not a breath and not a stop — just a held silence, marked in the mushaf with a small س. Once you know it is there, the reason for the clear Noon becomes obvious.

Complete vs Incomplete Idgham (Kamil & Naqis)

Here is the question that almost every English page leaves hanging. If the Noon disappears completely, where does the nasal sound in مَن يَعْمَلْ come from? Yaa is not a nasal letter. Something has to be producing that hum.

The classical answer is that the six letters split a second time — this time by how much of the Noon is absorbed.

So the hum you hear on ي and و is the last surviving property of a letter that is otherwise gone. The body of the Noon has been absorbed; one of its attributes has not. That is exactly what “incomplete” means here — incomplete absorption, not incomplete pronunciation.

With ن and م the merge is complete and yet a ghunnah is still heard — but that one belongs to the receiving letter itself, since both are nasal by nature. Two different sources, one similar sound. With ل and ر nothing nasal exists on either side, which is why those two are silent in every sense.

Play these two back to back and the distinction stops being theoretical:

You do not need this distinction to recite correctly — the sound comes out the same either way. You need it to understand why the sound is what it is, and that is the difference between memorising a table and knowing the rule.

Idgham vs Izhar vs Ikhfaa vs Iqlab

One silent Noon, four possible outcomes, and the only thing that decides between them is which letter comes next. Every letter of the Arabic alphabet belongs to exactly one of these four groups — there is no overlap and no letter left over.

The two confusions worth settling

Merging vs hiding. These two are mixed up more than any other pair, because both involve a nasal sound and neither gives you a clean Noon. The test is simple: ask whether the Noon still exists. In merging it does not — there is nothing left of it, and the next letter carries a shaddah. In hiding it is still there, produced somewhere between its own position and the next letter’s, audible as a hum without full contact. One erases the letter; the other conceals it.

Merging vs clear pronunciation. These are opposite ends of the same line, so confusing them is rarer but more serious. Clear pronunciation keeps the Noon at its natural length before the six throat letters. Merging removes it altogether before the six Yarmaloon letters. If the letters are far from the Noon, it survives; if they are close, it does not. Every other rule of the silent Noon is a point somewhere between those two extremes.

Merging vs conversion. Only one letter triggers conversion — ب — and the Noon does not stay and does not vanish. It changes identity and becomes a Meem, held with a two-count hum and the lips only lightly closed. It is the smallest rule of the four and the easiest to spot, since there is exactly one letter to watch for.

Idgham Rules for Noon Sakinah and Tanween

The trigger has two parts, and both must be present. First, a silent Noon or a Tanween. Second, one of the six merging letters opening the next word. Miss the second condition and the rule does not apply, no matter how right the letters look.

Rules of Idgham with Tanween

A Tanween is a silent Noon that is pronounced but not written as a letter. That is the whole of it. Every rule that governs نْ governs ـً ـٍ ـٌ in exactly the same way, and all six merging letters apply to it without modification.

Notice that the doubling appears in the text itself. Wherever this rule operates, the mushaf drops the sukoon from the Noon and places a shaddah on the following letter — the script is telling you what to do before you have worked it out.

The exception: when merging does NOT apply

Izhar Mutlaq (إظهار مطلق). When a silent Noon is followed by و or ي inside the same word, the Noon is pronounced clearly. Only four words in the Quran meet this description:

الدُّنْيَا  ·  بُنْيَان  ·  صِنْوَان  ·  قِنْوَان

The reasoning is about preserving meaning, not about sound. If these were merged, they would come out as ad-duyyā, buyyān, ṣiwwān — indistinguishable from words that genuinely contain a doubled letter. The root would be hidden and the word would look like something it is not. So the rule steps aside to keep the structure of the word visible.

Test Yourself: Which Rule Applies?

Four rules, one silent Noon. We’ll show you a verse with the Noon or Tanween highlighted — you pick the rule. And when the answer is merging, there’s a second question waiting: with or without ghunnah? Twelve questions, instant feedback, no sign-up.

Idgham Examples from the Quran

Twelve passages: six with a silent Noon, six with Tanween, covering all six letters and both types. The Noon or Tanween is marked in blue, the merging letter in orange. Press play to hear each one recited by Sheikh Al-Husary.

With Noon Sakinah

With Tanween

Surah Al-Ghashiyah verse 8 is the most efficient drill on this page: one short ayah containing two instances back to back, one merging into ي and the next into ن. If you can read it without letting the ghunnah slip, the rule is holding.

Common Mistakes to Avoid

Play: Idgham Basket (Free Game)

Recognising the rule under time pressure is a different skill from recognising it on a page. Catch the words where the Noon merges, let the rest fall past, and see how long you last. It works on phones and tablets, and no account is needed.

Game not loading? Open it in a new tab · or browse all our free Arabic letter games.

Learn More

Merging is one of four rules that govern the silent Noon. Here’s what to study next:

All of them sit inside the wider set of Tajweed rules, and all of them are covered step by step in our Tajweed courses.

Frequently Asked Questions

May Allah beautify your recitation and accept it from you. 🤲

The Izhar letters are six Arabic letters — ء ، ه ، ع ، ح ، غ ، خ — all pronounced from the throat. When a silent Noon (نْ) or Tanween is followed by any of them, it must be pronounced clearly and separately, with no merging, no hiding, and no extra nasal sound. Izhar means “to make clear” in Arabic, and it is the first of the four rules of Noon Sakinah and Tanween.

Also spelled Idhar, Izhaar or Ith-har in English transliterations.

What Does Izhar Mean?

The word comes from the Arabic root ẓ-h-r (ظَهَرَ) — to appear, to become visible. The image behind the term is exactly right: the Noon does not hide behind the letter that follows it and does not dissolve into it. It stays out in the open, audible as itself.

That is the whole rule in one sentence. But there is a detail here that most English pages get wrong, and it is worth slowing down for.

So a more precise definition is this: Izhar is the Noon at its natural length. Nothing added, nothing removed, nothing borrowed from the next letter. Once you hear it that way, the other three Noon Sakinah rules become easy to place — each one is a departure from this baseline in a different direction.

The 6 Izhar Letters (Huroof al-Halq)

All six letters of Izhar come out of the throat, which is why the classical books call them ḥurūf al-ḥalq — the throat letters. Tap the play button on any row to hear the example word in the recitation of Sheikh Mahmoud Khalil Al-Husary.

The mnemonic: أَخِي هَاكَ عِلْمًا حَازَهُ غَيْرُ خَاسِرِ

Scholars do not ask students to memorise six loose letters. They hand over one short sentence instead:

أَخِي هَاكَ عِلْمًا حَازَهُ غَيْرُ خَاسِرِ

It reads Akhī hāka ʿilman ḥāzahu ghayru khāsirī and means: “My brother, take a knowledge that was gained by one who is no loser.” The first letter of every word is one of the six letters of Izhar, in the exact order they sit in the throat: أ → ه → ع → ح → غ → خ. Learn the sentence and you have the list, permanently.

Why these six letters and not others?

This is the part almost every English article skips, and it is the part that makes the rule stop feeling arbitrary. It comes down to distance.

The Noon is produced at the very front of the mouth: the tip of the tongue touches the gum line just behind the upper front teeth, while air escapes through the nose. The six throat letters are produced at the opposite end of the vocal tract — in the glottis and the pharynx, as far back as Arabic goes. You can read more about how each sound is placed in our guide to the Makhraj of Arabic letters.

Merging two sounds requires them to be neighbours. The tongue cannot slide from the front gum line into the back of the throat quickly enough to blur the two together, so the Noon survives intact — not because a rule protects it, but because the anatomy leaves it no other option. Phonetically these are the pharyngeal and glottal consonants of Arabic, described in reference works such as the Encyclopedia of Arabic Language and Linguistics, and the distance between them and the Noon is the largest in the language.

Every other Noon Sakinah rule follows the same logic in reverse. The closer the following letter sits to the Noon’s own point of articulation, the more the Noon gives way to it — until, with the closest letters of all, it disappears completely into them.

How to Pronounce Izhar Correctly

Three steps, and the third one is where nearly everyone slips.

The 3 Levels of Izhar

The six letters do not all behave with equal strength. Because clarity is a function of distance, the further a throat letter sits from the Noon, the more obviously clear the Noon becomes. The classical works therefore grade this rule into three degrees, from strongest to weakest.

“Weakest” here does not mean optional. All six are pronounced clearly; the grading describes how pronounced the clarity feels to the ear, and it is why some reciters sound slightly firmer on مَنْ آمَنَ than on مِنْ غِلٍّ. This three-way grading is standard in the recitation manuals taught at institutions such as Al-Azhar.

Throat map: hear the three levels

Tap a zone to hear its two letters inside a real Quranic word, recited by Sheikh Al-Husary. Move from the top zone downwards and listen for how the Noon loosens slightly as the letters come closer to it.

Izhar Rules: Where It Applies

The trigger is simple and has no exceptions to memorise: a silent Noon or a Tanween, followed by one of the six throat letters. That combination occurs in three shapes.

The 4 Types of Izhar in Tajweed

The word appears in four different places in Tajweed, and learners mix them up constantly. Everything on this page so far describes the first one — Izhar Halqi, the throat variety. Here is how it sits against the other three.

The common thread is the meaning of the word itself: in every one of the four, a letter that could have been merged or softened is instead left plainly audible. Only the letter being protected changes — the Noon in the first and third, the Meem in the second, the Lam in the fourth.

Test Yourself: Spot the Izhar

You know the six letters — now find them in real verses. We’ll show you an ayah with a silent Noon or Tanween highlighted. Tap the rule you think applies. Ten questions, instant feedback, no sign-up.

Izhar Examples from the Quran

Ten short passages covering all six letters, both word positions, and all three Tanween endings. The silent Noon or Tanween is marked in blue, the throat letter in orange. Press play to hear each one in the recitation of Sheikh Al-Husary.

Surah Al-Qadr is the single best passage to drill this on: five short ayat, two clear instances, and a rhythm slow enough that you can hear your own nasal sound before the next word arrives.

Common Mistakes to Avoid

Play: Eagle of Izhar (Free Game)

Recognition under time pressure is a different skill from recognition on a page. Fly the eagle, catch only the six throat letters, and see how long you last. It works on phones and tablets, and no account is needed.

Game not loading? Open it in a new tab · or browse all our free Arabic letter games.

Learn More

Izhar is the first of four rules that govern the silent Noon. Here’s what to study next:

All of them sit inside the wider set of Tajweed rules, and all of them are covered step by step in our Tajweed courses.

Frequently Asked Questions

May Allah beautify your recitation and accept it from you. 🤲

Noon Sakinah rules determine how a silent Noon (نْ) or Tanween is pronounced depending on the letter that follows it. There are four rules: Izhar (clear pronunciation, 6 letters), Idgham (merging, 6 letters), Iqlab (conversion to Meem, 1 letter), and Ikhfa (concealment, 15 letters). Together these four cover all 28 Arabic letters — every letter triggers exactly one rule.

What Is Noon Sakinah?

A Noon Sakinah (النون الساكنة) is the letter ن carrying a sukoon — a Noon with no vowel of its own. It appears in the middle of a word and at the end of one, and it turns up in every part of speech: in nouns (أَنْعَام), in verbs (يَنْصُر) and in particles (مِنْ, عَنْ).

The rules on this page apply to that silent Noon only. A Noon carrying a fatḥah, ḍammah or kasrah — نَ نُ نِ — is simply pronounced as it is written, and none of the four rulings touch it. Students who mix the two end up applying Ikhfa in places it does not belong, so it is worth fixing the boundary early: no sukoon, no rule.

One more property makes the Noon Sakinah the easier half of this topic: it is fixed. It is written in the muṣḥaf, it is pronounced in both continuation and pausing, and it does not appear or disappear depending on how you read the sentence. What you see on the page is what your tongue has to deal with.

What Is Tanween and Why Does It Follow the Same Rules?

Tanween (التنوين) is a doubled vowel written at the end of an indefinite noun — ــًـ ــٌـ ــٍـ — and pronounced as an extra Noon Sakinah. The Noon is heard but never written, which is exactly why beginners treat Tanween as a separate topic when it is not one.

The golden rule is short: any ruling that applies to a written Noon Sakinah applies identically to Tanween. Same four rules, same letter groups, same ghunnah length. There is nothing extra to memorise.

Only one practical difference exists. A Noon Sakinah can sit inside a word, so the letter after it may belong to the same word. Tanween is always word-final, so the letter that triggers the rule is always the first letter of the next word. That is why Tanween examples always straddle a word boundary.

Read the two columns across and the parallel is unmistakable. If you can classify the left column, you can already classify the right one — the only new skill is hearing the Noon that isn’t printed.

The 4 Noon Sakinah Rules at a Glance

Most guides present the four Noon Sakinah rules as four unrelated lists to be memorised. They are not unrelated — they are one sliding scale, and once you see the scale the lists stop needing memorisation at all.

The Noon is produced at the tip of the tongue against the gum ridge, with the sound resonating in the nose. Every rule below is decided by how far the following letter’s articulation point sits from that spot — which is why this topic sits so close to the Makhraj of Arabic letters.

That is the entire system in four sentences. The letter lists that follow are consequences of it, not arbitrary groupings, and students who understand the logic stop confusing Ikhfa with Idgham almost immediately.

One detail to carry into the sections below: the ghunnah — the nasal hum — is measured in counts, not moments. Two counts (ḥarakatān), roughly the length of saying two short vowels. It appears in Ikhfa, in Iqlab and in four of the six Idgham letters, and it is absent in Izhar and in the remaining two Idgham letters. Getting the letter groups right but the ghunnah length wrong is the single most common way to sound untrained while technically applying the correct rule.

Izhar — The 6 Clear Letters

Izhar (إظهار) means “to make clear”. The Noon Sakinah or Tanween is pronounced exactly as it is — a clean Noon, released fully, with no added ghunnah and no blending whatsoever into the letter that follows.

These six are not a random selection: they are the ḥurūf al-ḥalq, the throat letters, and they are the complete set of them. The Noon is made at the front of the mouth; these are made at the very back. The distance is too great for any blending to occur naturally, so the language leaves the Noon alone. Learn the six as “the throat group” and you will never need to recite the list.

Idgham — The 6 Merging Letters

Idgham (إدغام) means “to merge”. The Noon Sakinah or Tanween disappears completely into the letter that follows, and that letter is doubled (given a shaddah) in its place. There is no trace of the Noon left as a consonant — only, in four of the six cases, the nasal resonance it leaves behind.

The six Idgham letters are ي ر م ل و ن, traditionally gathered in the phrase يَرْمَلُونَ (yarmalūn). They split into two groups, and the split matters more than the list.

Idgham with Ghunnah (4 letters: ي ن م و)

These four are gathered in the word يَنْمُو (yanmū, “it grows”) — a mnemonic worth ten minutes of your time, because it is the only list on this page you truly have to hold. The Noon merges into the following letter and the nasal sound is held for two counts.

Idgham without Ghunnah (2 letters: ل ر)

With Lām and Rā the merge is total and instant: the Noon vanishes and no nasal sound is left behind at all. This is the group learners over-hum most, because they carry the ghunnah habit across from the four letters above.

The Exception — When Idgham Doesn’t Apply

Idgham requires the Noon Sakinah and the following letter to sit in two separate words. When a Noon Sakinah is followed by و or ي inside the same word, there is no merging at all — the Noon is pronounced clearly. Scholars call this al-iẓhār al-muṭlaq, absolute clarity, and it is the reason a reader who has memorised the yarmalūn list can still get these words wrong.

Four words is a small thing to learn, and ٱلدُّنْيَا alone appears well over a hundred times in the muṣḥaf — so this exception is not academic trivia. It is a correction most readers need on their first page.

Iqlab — The 1 Converting Letter

Iqlab (إقلاب) means “to convert”. It has a single trigger letter — ب — and one instruction: when a Noon Sakinah or Tanween is followed by Bā, the Noon is turned into a hidden Meem, pronounced with the lips lightly together and a ghunnah held for two counts.

The reason is mechanical. The Bā is made at the lips; the Noon is made at the gum ridge with the nose open. Moving directly from one to the other forces an awkward jump, so Arabic substitutes the sound that already shares the Bā’s articulation point and the Noon’s nasality: the Meem. Nothing is invented — the Meem is simply the natural meeting point of the two.

The small meem you keep seeing in the muṣḥaf

Iqlab is the only one of the four rules with its own printed marker. Wherever it occurs, a small ﻢ is written above the Noon or in place of one of the Tanween strokes — نۢ, ـًۢ. Readers see it constantly and rarely know what it means. It is not a vowel and not part of the spelling: it is an instruction to the reciter, telling you to produce a Meem here rather than a Noon.

One nuance worth carrying: the lips should meet lightly. Pressing them shut turns the hidden Meem into a full, released Meem and cuts the ghunnah short. The target is a soft closure held for two counts, with the sound running through the nose the whole time.

Ikhfa — The 15 Hidden Letters

The Ikhfa rules cover more letters than the other three combined, which makes this the rule you will apply most often on any given page. Ikhfa (إخفاء) means “to conceal”: the Noon is pronounced neither clearly nor merged away, but held in a middle state — hidden behind a nasal hum lasting two counts.

The practical description is more useful than the definition. In Ikhfa your tongue never touches the Noon’s articulation point at all. It leaves the gum ridge alone and moves straight into position for the letter that is coming, while the sound continues through the nose during the gap. That gap is the Ikhfa.

Some of the fifteen carry a sound of their own that changes the ghunnah: the ghunnah is slightly heavier before heavy letters in Arabic like ق and ط, and stays thin before light ones like ت and ك. It is a small adjustment, but it is what makes an Ikhfa sound native rather than mechanical.

The three degrees of Ikhfa

Not every Ikhfa sounds identical, and this is the layer most guides leave out. How close the concealment sits to Idgham or to Izhar depends on how near the following letter’s articulation point is to the Noon’s.

You do not need to reproduce the three degrees deliberately; they emerge on their own once the tongue is genuinely moving towards the next letter instead of stopping at the Noon. Knowing they exist simply explains why your Ikhfa before ق sounds different from your Ikhfa before ت — and reassures you that the difference is correct, not a fault. The same three-way gradation is set out in the classical Tajweed manuals, where it is tied directly to the articulation points rather than to convention.

Test Yourself: Which Noon Sakinah Rule Applies?

Four rules, twenty-eight letters — the only way to know if it’s stuck is to test it. We’ll show you a word from the Quran with the Noon Sakinah or Tanween highlighted. You pick the rule. Twelve questions, instant feedback, no sign-up.

Play: The Eagle of Izhar

The quiz checks whether you know the rule. This one checks whether you can spot the letters at speed — a different skill, and the one that actually shows up when you are reciting a page rather than studying a chart. Play it directly below, or open it in a new tab if you prefer a full screen.

It works well for children too. The six throat letters stop being a list to recite and become a group they can recognise on sight — which is exactly the transfer you want in place before formal Tajweed lessons begin.

Noon Sakinah and Tanween Examples from the Quran

Rules settle once you meet them in the text you actually recite. Each line highlights the Noon or Tanween in its rule’s colour — Izhar, Idgham, Iqlab, Ikhfa — with the recitation of Sheikh Al-Husary beside it.

Notice how often two different rules land in the same short verse — 106:4 alone carries an Ikhfa and an Izhar four words apart. That is the real skill: not producing each sound in isolation, but switching between them cleanly at reciting speed. If you’d like to drill this alongside the other rules, our free Arabic letter games cover the same ground for children and adults.

Common Mistakes to Avoid

Frequently Asked Questions

Where This Fits in Tajweed

The Noon Sakinah rules are the first system most students meet inside the wider body of Tajweed rules, and they are a good place to start precisely because they close: four rules, twenty-eight letters, no gaps. Once the chart is in your head, every Noon on the page has an answer.

What takes longer is the sound. Classifying a letter is a five-second decision; holding a ghunnah for a genuine two counts, in the middle of a verse, at reciting speed, is a physical habit. If you want that feedback, our Tajweed courses are built around exactly this kind of correction, or you can simply book a free trial lesson and recite a page.

May Allah make the Quran the spring of your heart, and may He accept it from you. 🤲

There are five qalqalah letters in Arabic: ق ط ب ج د — Qaf, Ta, Ba, Jeem and Dal — gathered in the mnemonic قطب جد (Qutbu Jad). When one of them carries a sukoon, it is released with a light bounce or echo instead of being pressed flat. That bounce is qalqalah, and this page gives you the letters, the two types, real Quranic examples with the recitation of Sheikh Al-Husary, and a free game to practise spotting them.

What Are the Qalqalah Letters?

The word qalqalah (قلقلة) literally means shaking, disturbance or vibration. In Tajweed it describes a very short, controlled movement of sound that escapes when one of the five letters is released. You will also see the rule written as qalqala, qolqolah or haroof e qalqalah in different transliterations — they all refer to the same rule and the same five letters.

The reason this rule exists is phonetic rather than decorative. These five letters share one key feature: they are all shadidah (plosive) — the airflow is completely blocked at the point of articulation. Without the bounce, the blocked air simply has nowhere to go and the letter gets swallowed — the listener hears a gap instead of a consonant. The qalqalah releases that blockage cleanly, so the letter stays audible.

This is why qalqalah is not optional. A reciter who skips it is not reciting in a plainer style; the letter itself has been dropped from the word. Every recognised chain of recitation applies the rule, which is one of the reasons it is usually among the first three or four rules taught to a beginner alongside the other core Tajweed rules.

The 5 Qalqalah Letters and Their Makhraj

Each of the letters of qalqalah has its own point of articulation (makhraj). Knowing where the letter is formed makes the bounce far easier to produce, because the bounce is simply the release of that exact point:

The mnemonic: قطب جد

Rather than memorising five separate letters, teachers gather them into one short phrase: قطب جد, read as Qutbu Jad. Every letter in that phrase is a qalqalah letter, in order: ق, ط, ب, then ج, د. Learn the phrase and the whole list comes with it — which is why almost every child taught in a traditional halaqah can recite the huruf qalqalah before they can explain the rule.

Some books use the variant qutb jadd or write it as two words. The spelling makes no difference; the five letters are fixed and agreed upon.

How Many Qalqalah Letters Are There?

Learners often expect the list to be longer, and there are two usual reasons. The first is confusion with the heavy letters of tafkheem — ص, ض, ط, ظ, غ, خ, ق. Two letters (ط and ق) belong to both groups, so students who meet tafkheem first assume the rest of that group bounces too. It does not: ص and ض are pronounced heavy, but the air is not released with an echo.

The second reason is that a qalqalah letter with a vowel on it does not bounce, so learners hear ب in bismi and conclude the rule is inconsistent. It is not — the rule only ever activates on sukoon. That single condition is what separates a qalqalah letter from an actual qalqalah occurrence.

How to Pronounce Qalqalah Letters (Step by Step)

The mechanic is the same for all five letters. Only the point of contact changes:

Listen and Practice: Qalqalah Letters in Action

Reading about qalqalah isn’t the same as hearing it. Below, tap each letter to hear a real Quranic word where that letter carries a sukoon, recited by Sheikh Mahmoud Khalil Al-Husary, so you can hear exactly what the bounce sounds like — then repeat it aloud yourself before moving to the next one.

The Two Types of Qalqalah: Sughra vs Kubra

The rules of qalqalah divide it into two levels of strength. The letters are identical in both; what changes is where the sukoon falls, and therefore how much the bounce is emphasised.

The last row of that table catches a lot of learners. In qul huwa Allāhu aḥad, the د bounces only because you stopped on it. If you join the ayah to the next one, the word is read aḥadun and there is no bounce at all — the sukoon was never there to begin with.

Examples of Qalqalah from the Quran

These five ayat are the ones most often used to teach the rule, because the bounce falls in a place you cannot miss. Press play on each, and follow the highlighted letter as Sheikh Al-Husary recites it.

Surah Al-Ikhlas, Al-Falaq and An-Nas are worth reciting slowly as a set once you know the rule, because the qalqalah kubra lands on the final letter of several ayat in a row. Children pick the rule up from those three surahs faster than from any explanation.

If you want to hear the same reciter across a longer passage while you practise, the phrase-by-phrase player on our Ayat al-Kursi memorization tool and on the last two ayat of Al-Baqarah uses the same recitation.

Common Mistakes Students Make with Qalqalah

Practise: Pop the Qalqalah Letters (Free Game)

Recognising the letters in isolation is easy; recognising them inside a running word is the actual skill. Play the game below — pop only the letters of qalqalah as they appear, and try to finish without popping a wrong letter. It works on phones and tablets, and no account is needed.

Game not loading? Open it in a new tab · or browse all our free Tajweed games.

Qalqalah video for kids

A short animated explanation of the rule for younger learners — useful if you are teaching qalqalah to a child at home:

Why Qalqalah Matters in Quran Recitation

Tajweed exists to preserve the Quran as it was recited and taught, sound for sound, through an unbroken chain of transmission. Qalqalah is a small part of that, but it is a part that is heard on almost every page — the five letters are among the most common in the language, and a reciter who ignores the rule alters the shape of hundreds of words.

It is also a rule with a genuine payoff for beginners. Unlike the finer points of madd, qalqalah can be learned in an afternoon and applied immediately, and it makes recitation sound noticeably more correct straight away. That early win is often what carries a student into the rest of the Tajweed rules course.

Common Questions About Qalqalah

Practise Qalqalah with Quran Book Online

You can learn the five letters from this page and drill them in the game above, but qalqalah is a sound, and a sound needs an ear on the other side. A teacher listening to you for ten minutes will tell you immediately whether your bounce is too heavy, too light, or landing on the wrong letter — something no page or app can do for you.

May Allah beautify your recitation and accept it from you. 🤲