Tajweed classes: and Quranic Examples

Idgham is one of the rules students grasp fastest once they learn Quran online with structured practice. Pair this guide with a live lesson to lock it in.

Idghaam is the second of the four rules of Noon Saakin and Tanween, and it is the rule where beginners most often confuse themselves. Izhar is simple: pronounce the noon clearly. Iqlaab is simple: replace the noon with a meem. Ikhfaa is a two-count nasal Ghunna sound. But Idghaam asks you to make the noon merge into the next letter — and there are two different ways it does this, depending on which of the six letters follows. Miss the type and the recitation is wrong even if the letters are right.

This guide is the complete, practical walk-through. The meaning of the rule, the six letters with the classical yarmaloon mnemonic, the two types (Idghaam with Ghunnah and Idghaam without Ghunnah), the four famous Quranic words where the rule does not apply, letter-by-letter examples from the Mushaf, common mistakes, and a daily drill structure. For the first rule of Noon Saakin, read our Izhar Halqi guide. For the fourth rule, read our Ikhfaa Haqiqi guide. This post covers rule two.

What Idghaam actually means

The word Idghaam (إِدْغَام) means to merge, to absorb, or to insert one thing into another. In Tajweed terminology, the rule is stated simply:

Whenever Noon Saakinah or Tanween is followed by one of the six letters of Idghaam, the noon is merged into the next letter, which is then pronounced with a shaddah.

The key word is merged. The noon does not stay, even hidden. It does not produce a separate sound. It becomes part of the next letter, which is now doubled (shaddah). Where Ikhfaa keeps the noon as a nasal Ghunna sound for two counts, Idghaam removes it entirely — its sound passes into the next letter and is expressed as a doubling of that letter.

A concrete example: min rabbihim (مِنْ رَبِّهِمْ) is not pronounced min rabbihim with a clear n and then an r. It is pronounced mir-rabbihim — the noon has been merged into the Raa, and the Raa is now stressed as though it carried a shaddah. The word sounds like it begins with a doubled Raa.

The six letters of Idghaam — the yarmaloon mnemonic

There are exactly six letters that trigger Idghaam. Every traditional Tajweed teacher, from classical madrasahs in Cairo to modern online academies, uses the same six-letter mnemonic:

يَرْمَلُون — yarmaloon

The six letters in this single word are, in order: ي (Yaa), ر (Raa), م (Meem), ل (Laam), و (Waw), ن (Noon). Memorise yarmaloon once and the six letters are with you for life.

A second, equally traditional mnemonic groups the same letters into just the ones that carry ghunnah: يَنْمُو (yanmoo, "it grows") or يومن (yawman). We will use that in the next section.

The two types of Idghaam

This is the distinction every student needs to learn carefully. The six letters of yarmaloon split into two groups, and each group produces a different sound when the noon merges into it.

Why the difference? Because Laam and Raa are produced very close to the articulation point of the noon itself, the merger is so complete that no nasal remainder escapes. With the other four letters (Yaa, Noon, Meem, Waw), a trace of the noon's nasal quality is maintained as the two-count ghunnah.

A critical rule: Idghaam only applies across word boundaries

This is where beginners make a specific mistake. Idghaam only applies when the noon saakin (or tanween) is at the end of one word and the yarmaloon letter starts the next word. When a noon saakin is followed by one of the six letters within the same word, Idghaam does not apply. The noon is pronounced clearly — a rule called Izhar Mutlaq (Absolute Izhar).

This exception appears in only four words in the entire Quran. Every serious Tajweed student memorises them:

In each of these, a noon saakin is followed by a yarmaloon letter (ي or و), but because they are in the same word, the noon is pronounced clearly. The classical scholars reasoned that merging the noon within a word would destroy the word's structure and change its meaning. So the rule is restricted to word boundaries.

Letter-by-letter examples from the Quran

Every Tajweed student drills Idghaam with specific Quranic examples for each of the six letters. Below, with transliteration, are the standard pairings every curriculum uses.

Idghaam with Ghunnah (4 letters)

ي (Yaa)

ن (Noon)

م (Meem)

و (Waw)

Idghaam without Ghunnah (2 letters)

These are the letters where the merger is so complete that no nasal remainder is heard. The next letter carries a shaddah, and there is no ghunnah at all.

ل (Laam)

ر (Raa)

The four common mistakes in Idghaam

1. Pronouncing the noon clearly before the merger. The student says min-rabbihim instead of mir-rabbihim. The whole point of Idghaam is that the noon disappears into the next letter. If you hear the noon at all, the rule has not been applied.

2. Using ghunnah with Laam or Raa. The most common mistake, carried over from Yaa/Noon/Meem/Waw. With Laam and Raa there is no ghunnah. The merger is silent. If you hold a nasal hum before Laam or Raa, the rule is wrong.

3. Forgetting ghunnah with Yaa/Noon/Meem/Waw. Opposite mistake. The student correctly merges the noon but forgets the two-count nasal hum. Without the ghunnah, the Idghaam with Ghunnah collapses into Idghaam without Ghunnah — also wrong.

4. Applying Idghaam inside a single word. The student says ad-duyya instead of al-dunya. Remember the four exceptions (al-dunya, bunyaan, qinwaan, sinwaan). Within a word, a noon saakin followed by a yarmaloon letter is pronounced clearly.

How to drill Idghaam

Idghaam is best learned by pairing the six letters with their examples in a specific order — from the cleanest merger to the most subtle.

A 15-minute daily drill

1. Minutes 1–2. Recite the mnemonic yarmaloon aloud three times. Group them: yanmoo (with ghunnah) vs Laam and Raa (without ghunnah).

2. Minutes 3–6. Ghunnah drill. Four examples, one per letter of yanmoo: may-ya‘mal (Yaa), min-nutfatin (Noon), mim-maa'in (Meem), miw-waliyyin (Waw). Five times each, holding the two-count ghunnah on each merger.

3. Minutes 7–10. No-ghunnah drill. Three Laam examples and three Raa examples. Mil-ladunhu, hudal-lilmuttaqeen, waylul-lilmutaffifeen, mir-rabbihim, ghafoorur-raheem, khayrar-rizqaa. Five times each. No ghunnah — the merger is silent.

4. Minutes 11–13. The four exceptions. Recite al-dunya, bunyaan, qinwaan, sinwaan with clear Izhar on the noon. This cements the boundary — across words yes, within words no.

5. Minutes 14–15. Record and replay. Record yourself reciting ghafoorur-raheem, mir-rabbihim, and mil-ladunhu. Listen back. If you hear any trace of noon before the Laam or Raa, correct on the next attempt.

Two weeks at this drill, plus one or two live classes a week with a qualified teacher, and Idghaam becomes automatic for both types.

Idghaam in context — where it sits among the four rules

Idghaam is the second rule of Noon Saakin and Tanween in the classical teaching order. The full picture:

Between them, these four rules cover every letter of the Arabic alphabet after a noon saakin or tanween. A student who has mastered all four has completed the foundational chapter of applied Tajweed.

How Eaalim teaches Idghaam

Eaalim teaches Idghaam the same way it teaches every Tajweed rule: short theory, heavy drilling on real Mushaf pages with the rule underlined, and live correction from an Al-Azhar certified teacher. Our Tajweed exercise library provides drill pages for each of the six yarmaloon letters, with Aalim Book colour coding for the syllables and red underlines on every Idghaam junction.

If you are moving through Tajweed in order, the sequence is: Arabic reading fluency with the Aalim Book, then Izhar Halqi, then Idghaam (this rule), then Iqlaab, then Ikhfaa Haqiqi. For how UK students structure their weekly routine around these rules, see our Learn Quran Online with Tajweed UK guide or our UK-focused Learn Idghaam Online UK walk-through.

Ready to start? Enrol in Eaalim's Online Quran Classes with Tajweed UK course and book a free trial lesson with an Al-Azhar certified teacher.

To see the Idghaam drills with a live teacher listening and correcting in real time, book a free 30-minute trial lesson. The teacher will diagnose your current Idghaam, identify whether your ghunnahs are the correct length and whether the Laam/Raa mergers are genuinely silent, and show you exactly which examples to drill first.