Idgham in Tajweed: Rules, Types, Letters, and Quranic Examples

Perfecting your Quran recitation means understanding the rules that govern how Arabic letters interact—and few rules are as foundational as idgham. When a letter merges into the one that follows, the recitation flows with a natural, measured beauty that reflects the Quran’s revealed structure.

Idgham in Tajweed is the merging of one letter into another so that the two become a single, doubled sound. This rule applies specifically to the Noon Sakinah, Tanween, and Meem Sakinah in defined letter groups—and mastering it transforms your recitation from mechanical reading into authentic tarteel.

Idgham Meaning in Arabic

The word idgham (إدغام) comes from the Arabic root د-غ-م, meaning “to insert” or “to merge.” 

What Is Idgham in Tajweed?

Idgham in Tajweed is the merging of a non-voweled (sakin) letter into the letter that immediately follows it, producing a single doubled sound as if the two letters become one. The merged letter disappears, and the following letter is pronounced with a shaddah.

Read also: Idgham with Ghunnah and Without Ghunnah with Examples

Idgham Rules and the Conditions That Trigger This Merger

Idgham applies when specific triggering letters follow a Noon Sakinah (نْ) or Tanween (ـً ـٍ ـٌ) at the end of a word. The condition is straightforward: the Noon Sakinah or Tanween must appear at the end of one word, and one of the idgham letters must open the next word.

Idham Letters

The idgham letters are six, summarized in the phrase يَرْمُلُونَ (Yarmuloon): ي، ر، م، ل، و، ن. These six letters split into two groups determining whether ghunnah (nasal sound) accompanies the merger.

Condition	Rule Applies To	Boundary Requirement
Noon Sakinah + Idgham letter	End of word only	Must cross word boundary
Tanween + Idgham letter	End of word only	Must cross word boundary
Within same word	No idgham applies

At Learn Quran Tajweed Academy, our Beginner Tajweed Course introduces idgham within a structured framework of Noon Sakinah rules, ensuring students build solid foundations before progressing to advanced rule interactions.

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Read also: Idgham Kamil and Idgham Naqis

What Are the Types of Idgham?

Scholars of Tajweed classify idgham types from multiple angles. The primary division for Noon Sakinah and Tanween splits into idgham with ghunnah and idgham without ghunnah. 

Beyond that, idgham extends to Meem Sakinah (idgham shafawi) and to interactions between similar, neighboring, or related letters—covering idgham mutamathalayn, idgham mutaqaribayn, and idgham mutajanisayn.

Understanding idgham types prevents confusion, because students often encounter different names in different textbooks without realizing they describe different applications of the same core principle.

Read also: Idgham Shafawi

1. Idgham with Ghunnah and Its Four Letters

Idgham with ghunnah — idghaam bighunnah — occurs when Noon Sakinah or Tanween is followed by one of four letters: ي، ن، م، و (Yaa, Noon, Meem, Waw). The Noon merges into the following letter with a nasalized resonance (ghunnah) held for two counts (harakat).

The ghunnah here is obligatory and must be clearly audible. A common error among students is rushing the merger and losing the nasal duration. 

The ghunnah should resonate from the nasal passage, not the throat, making it distinctly different from idgham without ghunnah.

Idgham with Ghunnah Letters Reference Table

Letter	Name	Example Word
ي	Yaa	مَنْ يَقُولُ
ن	Noon	مِنْ نِعْمَةٍ
م	Meem	مِنْ مَاءٍ
و	Waw	مِنْ وَلِيٍّ

Idgham with Ghunnah Examples from the Quran

Noon Sakinah followed by Yaa and Meem appear frequently across the Quran. A precise example demonstrates how idgham with ghunnah sounds in connected recitation.

فمَن يَعْمَلْ مِثْقَالَ ذَرَّةٍ خَيْرًا يَرَهُ
Fa maya’mal mithqāla dharratin khayray-yarah
“And whoever does an atom’s weight of good will see it.” (Az-Zalzalah 99:7) 

Idgham bighunnah / idghaam with ghunnah: نْ + يَ — Noon Sakinah merges into Yaa with nasal resonance

مِن مَّاءٍ مَّهِينٍ
Min māin mahīn
“From a liquid disdained.” (Al-Mursalat 77:20) 

Idgham bighunnah: نْ + مَ — Noon Sakinah merges into Meem with two-count ghunnah

Read also: Idgham Mutamathilayn, Mutajanisayn, and Mutaqaribayn

2. Idgham without Ghunnah and Its Two Letters

Idgham without ghunnah — idghaam bila ghunnah / idghaam bighayri ghunnah — occurs when Noon Sakinah or Tanween is followed by ل (Laam) or ر (Raa). The Noon merges completely into the following letter with no nasal resonance whatsoever.

This complete, silent absorption is what makes idgham without ghunnah particularly challenging. Students trained on ghunnah instinctively add nasalization—the correct application requires erasing the nasal entirely and doubling the Laam or Raa cleanly.

Idgham without Ghunnah Examples from the Quran

These letters appear constantly in Quranic Arabic, making this among the most frequently applied idgham rules in actual recitation.

مِن رَّبِّهِمْ
Mirabbihim
“From their Lord.” (Al-Baqarah 2:5) 

Idgham bila ghunnah / idgham without ghunnah: نْ + رَ — complete merger, zero nasalization

مِن لَّدُنْهُ
Miladunhu
“From Himself.” (Al-Kahf 18:2) 

Idgham bighayri ghunnah: نْ + لَ — Noon absorbed completely into Laam

3. Idgham Shafawi and the Rule of Meem Sakinah

Idgham shafawi — labial idgham — is a separate application of the merger principle, specific to Meem Sakinah (مْ). 

When Meem Sakinah is followed by another Meem, the first Meem merges into the second with an obligatory ghunnah of two counts.

The term shafawi (شفوي) means “labial,” referencing the lips as the articulation point. Both Meems share the same makhraj, making the merger natural and acoustically clean when applied correctly.

Idgham Shafawi Example

كَمْ مِنْ فِئَةٍ
Kam min fi’ah
“How many a group.” (Al-Baqarah 2:249) 

Idgham shafawi: مْ + مِ — Meem Sakinah merges into the following Meem with ghunnah

4. Idgham Mutamathalyn: When Two Identical Letters Merge

Idgham mutamathalyn — the merger of two identical letters — occurs when any letter with sukoon is immediately followed by the same letter. The first letter merges completely into the second, which carries a shaddah.

This rule extends beyond Noon and Meem and applies throughout the Quran wherever two identical letters meet across or within word boundaries under the right conditions.

Idgham Mutamathalyn Example

بَل لَّا تُكْرِمُونَ الْيَتِيمَ
Bal lā tukrimoonal-yatīm
“Rather, you do not honor the orphan.” (Al-Fajr 89:17) 

Idgham mutamathalyn: لْ + لَ — Laam Sakinah merges into Laam

5. Idgham Mutaqaribayn: When Two Close Letters Merge

Idgham mutaqaribayn involves two letters that are close in makhraj (articulation point) or in sifat (attribute), where the first merges into the second. The most practiced example involves Qaf merging into Kaf, and Laam merging into Raa.

This type appears less frequently but demands precision. The most notable application is أَلَمْ نَخْلُقكُّم where Qaf assimilates into Kaf.

Idgham Mutaqaribayn Example

أَلَمْ نَخْلُقكُّم
Alam nakhluqkkum
“Did We not create you?” (Al-Mursalat 77:20) 

Idgham mutaqaribayn: قْ + كَ — Qaf merges into Kaf in Hafs recitation

6. Idgham Mutajanisayn: When Letters Share the Same Makhraj

Idgham mutajanisayn occurs when two letters share the same articulation point but differ in attributes. Three pairs: Taa into Daal, Taa into ‘Taa, and Thaa into Dhaal.

This merger is often called “homorganic assimilation” in phonetics. The precise makhraj matching is what enables the merger, while the difference in sifat is what distinguishes it from mutamathalyn.

Idgham Mutajanisayn Example

يَلْهَثْ ذَّٰلِكَ
Yalhadhālik
“He pants; that is…” (Al-A’raf 7:176) 

Idgham mutajanisayn: ثْ + ذَ — Thaa merges into Dhaal

Pair	Makhraj	Example
تْ → دَ	Tip of tongue + upper incisors	قَدْ تَبَيَّنَ
تْ → طَ	Tip of tongue + upper incisors	هَمَّتْ طَائِفَةٌ
ثْ → ذَ	Tip of tongue + edge of incisors	يَلْهَثْ ذَٰلِكَ

7. Idgham Kamil and Idgham Naqis

Idgham kamil means complete merger—the first letter disappears entirely, leaving no trace of its original sound or attributes. 

Idgham naqis means incomplete merger—the first letter’s sound disappears, but one of its attributes, typically ghunnah or a distinct characteristic, remains audible.

This distinction is fundamental for certification-level recitation. In Hafs ‘an ‘Asim:

Idgham kamil applies to: Laam, Raa, Noon (into Noon), and Meem (into Meem) — complete absorption.

Idgham naqis applies to: Yaa and Waw following Noon Sakinah/Tanween — the Noon disappears, but the ghunnah attribute remains, and some scholars note the Yaa and Waw retain a slight softness (lin) that wouldn’t exist without the preceding Noon.

Working with Ijazah-certified instructors at Learn Quran Tajweed Academy through our Advanced Tajweed Course gives students the individualized attention needed to hear and apply the kamil/naqis distinction accurately, with flexible scheduling available 24/7.

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Idgham Examples from the Quran Across All Major Types

Seeing idgham examples consolidated helps students recognize patterns quickly in recitation. Here are verified examples covering the primary types:

Idgham with Ghunnah Examples

The four letters Yaa, Noon, Meem, and Waw (ينمو) each trigger idgham with ghunnah after Noon Sakinah or Tanween.

مِن نِّعْمَةٍ
Min-ni’mah
“From a blessing.” 

Noon Sakinah + Noon — idghaam bighunnah / idgham with ghunnah

مِن وَالٍ
Miw-wāl
“No protector.” (Ar-Ra’d 13:11) 

Noon Sakinah + Waw — idghaam with ghunnah / bighunnah

Idgham without Ghunnah Examples

Laam and Raa trigger complete absorption with zero nasal resonance. 

مِن لَّدُنْهُ
Mil-ladunhu “From Himself.” (Al-Kahf 18:2) 

Noon Sakinah + Laam — idgham bila ghunnah / idghaam without ghunnah

مِن رَّبِّهِمْ
Mir-rabbihim
“From their Lord.” (Al-Baqarah 2:5) 

Noon Sakinah + Raa — idghaam bighayri ghunnah / without ghunnah

Idgham Mutamathalyn Examples

Two identical letters meet — the first carries sukoon and merges completely into the second, which bears a shaddah.

اضْرِب بِّعَصَاكَ
Iḍrib-bi’aṣāk
“Strike with your staff.” (Al-Baqarah 2:60) 

Baa Sakinah + Baa — idgham mutamathalyn, complete merger

لَكُم مَّا كَسَبْتُمْ
Lakum-mā kasabtum
“For you is what you have earned.” (Al-Baqarah 2:134) 

Meem Sakinah + Meem — idgham mutamathalyn / idgham shafawi

Idgham Mutajanisayn Examples 

Two letters sharing the same makhraj but differing in sifat merge — three pairs appear in Hafs ‘an ‘Asim.

هَمَّت طَّائِفَةٌ
Hammat-ṭā’ifah
“A group had plotted.” (Āl ‘Imran 3:122) 

Taa Sakinah + Taa — idgham mutajanisayn

أَثْقَلَت دَّعَوَا
Athqalat-da’awā “It became heavy, they both supplicated.” (Al-A’raf 7:189) 

Taa Sakinah + Daal — idgham mutajanisayn

إِذ ظَّلَمُوا
Idh-ẓalamū
“When they wronged.” (An-Nisa 4:64) 

Dhaal Sakinah + Dhaa — idgham mutajanisayn

Idgham Mutaqaribayn Examples 

Two letters close in makhraj or sifat merge — in Hafs ‘an ‘Asim, the primary applications are Qaf into Kaf, and Laam into Raa.

أَلَمْ نَخْلُقكُّم
Alam nakhluq-kum
“Did We not create you?” (Al-Mursalat 77:20) 

Qaf Sakinah + Kaf — idgham mutaqaribayn, classified as idgham naqis — the Qaf’s qalqalah attribute faintly persists

قُل رَّبِّ
Qur-rabb
“Say: My Lord.” (Al-Isra 17:80) 

Laam Sakinah + Raa — idgham mutaqaribayn, kamil merger

Idgham Kamil and Idgham Naqis in Examples Side by Side

Type	Example	What Disappears	What Remains
Kamil	مِن رَّبِّهِمْ	Noon + ghunnah	Doubled Raa only
Kamil	مِن لَّدُنْهُ	Noon + ghunnah	Doubled Laam only
Naqis	مِن وَاقٍ	Noon sound	Ghunnah remains audible
Naqis	نَخْلُقكُّم	Qaf sound	Slight qalqalah character persists

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Pronunciation of Idgham in Tajweed When and How to Apply Each Type

Pronunciation of idgham in Tajweed requires both physical precision and consistent auditory feedback. When and how you apply idgham depends on identifying four elements in sequence: the triggering letter, its type (Noon Sakinah, Tanween, or Meem Sakinah), the following letter, and the word boundary.

For idgham with ghunnah, position the back of your tongue and open nasal passage simultaneously as you transition from the Noon to the following letter. The ghunnah should be two counts.

For idgham without ghunnah, close the nasal passage immediately. There must be zero resonance. The Laam or Raa following should feel doubled (mushaddad) without any preceding nasal preparation.

Learn Quran Tajweed Academy’s Quran Tarteel Course specializes in developing the pacing and breath control needed to apply idgham correctly within flowing, measured recitation rather than isolated practice.

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Idgham Must Be In Two Separate Words

One condition is non-negotiable for Idgham to apply: the Noon Sakinah and the Idgham letter must be in two separate words. If both letters appear within a single word, Idgham does not apply.

There are four words in the Quran where Noon Sakinah meets an Idgham letter within the same word. In these cases, Izhaar (clear pronunciation) is applied instead:

Quranic Word	Transliteration	Surah
صِنْوَانٌ	Sin’waan	Ar-Ra’d 13:4
قِنْوَانٌ	Qin’waan	Al-An’am 6:99
بُنْيَانٌ	Bun’yaan	As-Saf 61:4
الدُّنْيَا	Ad-Dun’yaa	Multiple surahs

In these words, the Noon Sakinah is pronounced clearly without any merging. Scholars of Tajweed explain this exception to preserve the clarity of the word’s meaning and structure.

Common Errors in Applying Idgham Rules and How to Correct Them

Even students with years of reading experience make consistent idgham errors. Recognizing them is the first correction step.

Common Error	Correct Application	Rule Affected
Adding ghunnah before Laam/Raa	No ghunnah whatsoever	Idgham without ghunnah
Applying idgham within one word	Only apply across word boundaries	All idgham types
Shortening ghunnah to one count	Full two-count nasal resonance	Idgham with ghunnah
Forgetting shaddah on the merged letter	Merged letter must be doubled	Idgham kamil
Confusing Waw/Yaa as full kamil	These are idgham naqis cases	Idgham naqis

**Learn Quran Tajweed Academy’s Intermediate Tajweed Course offers systematic progression for students who have foundational rule knowledge but struggle with accurate application in connected recitation, ensuring mastery of complex interactions before advancing further.

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Start Perfecting Your Idgham with Learn Quran Tajweed Academy

Mastering idgham rules transforms connected recitation. Learn Quran Tajweed Academy provides structured, expert-guided Tajweed instruction for non-Arabic speakers at every level.

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Conclusion

Idgham encompasses six distinct letters divided between two ghunnah categories, extends to Meem Sakinah through idgham shafawi, and branches into mutamathalyn, mutaqaribayn, and mutajanisayn based on letter similarity. Each type demands a distinct physical application.

The kamil and naqis distinction determines whether a merger is complete or carries a residual attribute—a level of nuance that separates confident reciters from certified ones. Applying these rules accurately requires trained listening, not just theoretical memorization.

Consistent practice with an Ijazah-certified instructor who provides real-time correction is, Alhamdulillah, the most reliable path to internalizing idgham correctly across all its types and applying it naturally in full Quranic recitation.