Nun Sukun & Tanwin

Idgham Bighunnah

Merged, with nasalisation.

إِدْغَام بِغُنَّة
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What is this rule?

A silent nun / tanwin meeting one of the letters in يَنْمُو merges into the following letter, accompanied by a nasal hum of about 2 counts.

How to read it

The 'n' isn't pronounced on its own — it flows straight into the next letter while humming through the nose.

Trigger letters

Gathered in the word يَنْمُو (yanmū).

ينمو
NoteExcept within a single word (e.g. دُنْيَا، صِنْوَان), where there is no merging — that's called izhar mutlak.

Examples of Idgham Bighunnah in the Qur'an

Surah Az-Zalzalah 99:7
فَمَن يَعْمَلْ

famay ya'mal

"So whoever does an atom's weight of good will see it,"

Surah 'Abasa 80:19
مِن نُّطْفَةٍ خَلَقَهُۥ

min nuṭfatin khalaqah

"From a sperm-drop He created him and destined for him;"

Surah Al-Mursalat 77:20
مِّن مَّآءٍ مَّهِينٍ

mim mā'im mahīn

"Did We not create you from a liquid disdained?"

Surah Al-A'la 87:17
خَيْرٌ وَأَبْقَىٰ

khairuw wa abqā

"While the Hereafter is better and more enduring."

Frequently asked questions

What is Idgham Bighunnah in tajwid?

Merged, with nasalisation. A silent nun / tanwin meeting one of the letters in يَنْمُو merges into the following letter, accompanied by a nasal hum of about 2 counts.

How do you pronounce Idgham Bighunnah?

The 'n' isn't pronounced on its own — it flows straight into the next letter while humming through the nose.

Which letters trigger Idgham Bighunnah?

There are 4 letters: ي ن م و. Gathered in the word يَنْمُو (yanmū).

What is an example of Idgham Bighunnah in the Quran?

One example is in Surah Az-Zalzalah 99:7: "فَمَن يَعْمَلْ" (famay ya'mal) — "So whoever does an atom's weight of good will see it,".

Other rules in Nun Sukun & Tanwin

Izhar Halqi
Pronounced clearly, no nasalisation.
إِظْهَار حَلْقِي
Idgham Bilaghunnah
Merged, without nasalisation.
إِدْغَام بِلَا غُنَّة
Iqlab
The nun turns into a mim.
إِقْلَاب
Ikhfa Haqiqi
Concealed + nasalisation.
إِخْفَاء حَقِيقِي

See all Nun Sukun & Tanwin rules → · Complete list of rules →