ي ن م و are the four letters for idghām with ghunnah; they can also be remembered with the mnemonic يَنْمُو.
The n-sound is not articulated as a completely separate consonant before the next letter. It merges with nasal resonance. Keep the following letter’s character accurate rather than replacing it with an indiscriminate nasal noise.
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Idghām with ghunnah: yāʾ, nūn, mīm, wāw
Sākin Nūn & Tanwīn — Iẓhār, Idghām, Qalb and Ikhfāʾ
ي ن م و are the four letters for idghām with ghunnah; they can also be remembered with the mnemonic يَنْمُو.
The n-sound is not articulated as a completely separate consonant before the next letter. It merges with nasal resonance. Keep the following letter’s character accurate rather than replacing it with an indiscriminate nasal noise.