Rules of Noon Saakin and Tanween 

Key Takeaways

Noon saakin and tanween both carry four governing rules: Izhar, Idgham, Iqlab, and Ikhfa, based on the following letter.

Izhar applies before six throat letters (ء هـ ع ح غ خ), requiring clear, unghosted pronunciation with no nasalization.

Idgham merges the noon into the next letter; with ghunnah for (ي و م ن) and without ghunnah for (ل ر).

Iqlab converts noon saakin or tanween into a concealed meem with ghunnah exclusively before the letter Baa (ب).

Ikhfa partially conceals the noon before 15 letters, holding nasal resonance for two counts between full clarity and full merging.

Reciting the Quran correctly requires more than recognizing letters — it requires knowing how those letters behave when they meet one another. One of the first and most frequently tested rules every student encounters is what happens to the noon saakin (نْ) or tanween (ـً ـٍ ـٌ) when followed by specific letters.

The rules of noon saakin and tanween fall into four categories — Izhar, Idgham, Iqlab, and Ikhfa — each triggered by the letter that immediately follows. Mastering these four rules transforms a student’s recitation from hesitant guesswork into confident, flowing Quran reading. 

What Is the Difference Between Noon Saakin and Tanween?

Noon saakin and tanween share the same ruling system, but they are distinct in nature and placement. Understanding the difference prevents common application errors from the very first lesson.

Noon saakin is an actual written letter — the noon (ن) without any vowel — appearing in nouns, verbs, and particles. It occurs both inside a single word and at its end.

Tanween, by contrast, is a pronunciation addition only. It is a silent noon sound appended to the end of indefinite nouns, represented graphically by doubled vowel markers (ـً ـٍ ـٌ). It is never written as a noon letter and never appears in verbs or particles.

Feature	Noon Saakin	Tanween
Written in Mushaf?	Yes	No
Position in word	Middle or end	End only
Word types	Nouns, verbs, particles	Nouns only
Present when pausing?	Yes	No — drops at pause

Both carry identical rulings when followed by the 28 remaining letters. The four rules apply equally to both.

If you are starting out, our Tajweed for Beginners course provides structured, one-on-one instruction covering every one of these rules from the ground up.

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What Is Izhar in Tajweed?

Izhar (الإظهار) means producing the noon saakin or tanween clearly and distinctly, without any nasalization extending into the following letter. It applies when noon saakin or tanween is followed by one of the six throat letters: ء، هـ، ع، ح، غ، خ.

These are called the huruf al-halq (letters of the throat) because all six originate from the throat area. The physical distance between the noon’s articulation point — the tip of the tongue against the gum — and the throat letters creates a natural separation, making merging impossible and clarity obligatory.

A widely used memory aid combines the six letters into the opening letters of this phrase: أَخِي هَاكَ عِلْمًا حَازَهُ غَيْرُ خَاسِرٍ (“My brother, here is knowledge acquired by one who is not a loser”).

Quranic Examples of Izhar

مَنْ آمَنَ
Man āmana
“Whoever believed” (Al-Baqarah 2:62) 

Noon saakin before Hamzah — clear noon, zero nasalization into the Alef

وَيَنْهَوْنَ
Wa yanhaun
“And they forbid” (Al-An’am 6:26) 

Noon saakin before Haa — noon is fully pronounced before moving to the haa

عَلِيمٌ حَكِيمٌ
ʿAlīmun Ḥakīm
“All-Knowing, All-Wise” (Al-Baqarah 2:32) 

Tanween Damm before Haa — the tanween noon sounds clearly before the haa

In our sessions at Buruj Academy, the most consistent error beginners make with Izhar is adding a slight nasal hum before the Haa or Hamzah. 

Ijazah-certified instructors trained in makharij correction identify and eliminate this habit early — usually within two to three sessions of focused drill. Our Online Tajweed Classes address exactly these micro-errors that self-study often misses.

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How Does Idgham Work in the Rules of Noon Saakin and Tanween?

Idgham (الإدغام) merges the noon saakin or tanween completely into the following letter, so that only one stressed (shaddah-like) sound is produced. It applies when noon saakin or tanween is followed by one of six letters collected in the word يَرْمَلُونَ (Yarmaloon): ي، ر، م، ل، و، ن.

Idgham operates across two words only — it never applies within a single word. This is a key distinction that students frequently overlook.

1. Idgham with Ghunnah: Letters ي، و، م، ن

When the following letter is one of the four letters in يَوْمَنُونَ (Yaw-manoon) — Yaa, Waw, Meem, or Noon — the merger happens with sustained nasal resonance (ghunnah) for two counts. The noon disappears into the letter, but the nasal hum continues.

مِنْ مَّالٍ
Min māl
“From wealth” (Al-Fajr 89:20) 

Noon saakin merges into Meem with ghunnah — pronounced “mimmāl”

يَوْمَئِذٍ نَّاعِمَةٌ
Yawma’idhin nāʿimah
“That Day, in ease” (Al-Ghashiyah 88:8) 

Tanween Kasr before Noon — merges into the noon of nāʿimah with ghunnah

2. Idgham without Ghunnah: Letters ل، ر

When followed by Laam or Raa, the noon merges completely with no nasal resonance — the ghunnah is entirely absent. This is called Idgham Kamil (complete merging).

مِنْ رَّبِّهِمْ
Min Rabbihim
“From their Lord” (Al-Baqarah 2:5) 

Noon saakin before Raa — fully absorbed, no ghunnah, pronounced “mirRabbihim”

بَظَلَّامٍ لِّلْعَبِيدِ
Biẓallāmil-lil ʿabīd
“Unjust to [His] servants” (Al-Hajj 22:10)

Tanween Kasr before Laam — complete merging without ghunnah

Type	Letters	Ghunnah?	Merger Type
Idgham with Ghunnah	ي، و، م، ن	Yes — 2 counts	Partial (nasal remains)
Idgham without Ghunnah	ل، ر	No	Complete absorption

For more detail on the mechanics of Idgham and its subdivisions, see our dedicated article on Idgham rules in Tajweed.

Our Ijazah-certified instructors train students to feel the complete absence of resonance by first exaggerating the Ra’s roll, then gradually softening it while keeping the Noon silent.

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What Is Iqlab?

Iqlab (الإقلاب) means converting the noon saakin or tanween into a concealed meem (م), pronounced with ghunnah, when followed by the letter Baa (ب). The noon sound changes entirely — it is neither pronounced as noon nor merged — but substituted with a nasal meem held for two counts before the Baa is articulated.

This is the narrowest of the four rules, having only one triggering letter. In the Mushaf, the letter (م) placed above the noon or tanween before Baa signals this rule visually.

 Read also: Rules of Meem Saakin With Clear Examples

Quranic Examples of Iqlab

أَنْبَأَكَ
Amba’aka
“Who informed you” (At-Tahrim 66:3) 

Noon saakin before Baa within one word — noon converts to meem: “Amba’aka”

مِنْ بَعْدِ
Mim baʿd
“After” (Al-Baqarah 2:27) 

Noon saakin before Baa across two words — pronounced “mimbaʿd” with nasal ghunnah

سَمِيعٌ بَصِيرٌ
Samīʿum Baṣīr
“All-Hearing, All-Seeing” (Al-Isra 17:1) 

Tanween Damm before Baa — pronounced “Samīʿumbaṣīr” with nasal meem and ghunnah

The physical reason for this substitution is elegant: Baa is a labial letter (lips close), and Meem is also labial. Pronouncing noon — a nasal tip-of-tongue sound — before Baa creates articulatory tension. The meem substitution eases the transition while preserving the nasal quality.

What is Ikhfa?

Ikhfa (الإخفاء) is a sound state between full Izhar (clear noon) and full Idgham (merged noon) — a partial concealment of the noon saakin or tanween, with ghunnah sustained for two counts, applied before 15 specific letters.

The noon is not pronounced fully, nor does it disappear. Instead, the tongue approaches — but does not complete — the position of the following letter, while nasal resonance continues. For a thorough breakdown of this rule and its letters, see our detailed article on the Ikhfa letters in Tajweed.

The 15 Ikhfa Letters

These 15 letters are everything remaining after removing Izhar letters (6), Idgham letters (6), and Iqlab’s letter Baa (1) from the Arabic alphabet. Classical scholars gathered them in the opening letters of this verse:

صِفْ ذَا ثَنَا كَمْ جَادَ شَخْصٌ قَدْ سَمَا — دُمْ طَيِّبًا زِدْ فِي تُقَى ضَعْ ظَالِمَا

The 15 letters: ص ذ ث ك ج ش ق س د ط ز ف ت ض ظ

Quranic Examples of Ikhfa

أَنصَارَ اللَّهِ
Anṣāral-lāh
“Helpers of Allah” (As-Saff 61:14) 

Noon saakin before Saad — concealed with nasal ghunnah

مِنْ ذَهَبٍ
Min dhahab
“Of gold” (Al-Kahf 18:31) 

Noon saakin before Dhaal — partial concealment, ghunnah maintained)

قَاعًا صَفْصَفًا
Qāʿan Ṣafṣafā
“A level plain” (Ta-Ha 20:106) 

Tanween Fath before Saad — concealed noon sound with sustained nasality

خَلْقٍ جَدِيدٍ
Khalqin jadīd
“New creation” (Saba 34:7) 

Tanween Kasr before Jeem — Ikhfa with ghunnah for two counts

Letter Category	Count	Rule Applied
Throat letters (ء هـ ع ح غ خ)	6	Izhar — clear noon
Yarmaloon letters (ي ر م ل و ن)	6	Idgham — merged noon
Baa only (ب)	1	Iqlab — noon becomes meem
Remaining letters	15	Ikhfa — concealed noon

Understanding ghunnah is central to applying Ikhfa correctly. Our article on ghunnah and its rules explains the nasal resonance mechanics in detail.

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 Read also: Islamic Topics for Kids and Youth

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Start Applying Noon Saakin Rules with Buruj Academy’s Expert Instructors

Knowing the four rules is only the beginning — applying them correctly during live recitation requires trained ears and consistent correction. 

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Conclusion

The rules of noon saakin and tanween — Izhar, Idgham, Iqlab, and Ikhfa — form a complete, logical system that governs one of the most frequently occurring sounds in Quran recitation. Each rule is triggered by the letter that follows, and together they cover every letter in the Arabic alphabet with no overlap and no gaps.

Mastering these rules does not require years of study — it requires correct instruction, genuine Quranic examples, and consistent practice. When these three elements align, the rules stop feeling like memorized labels and start sounding like natural recitation. That is the point where Tajweed becomes internalized rather than performed.

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Frequently Asked Questions About Noon Saakin and Tanween Rules