The Rule of Iqlab Made Simple

Tajweed can feel complicated with its many terms: Idgham, Ikhfa, Izhar. But Iqlab is arguably the easiest rule to master. Linguistically, 'Iqlab' means "to change" or "to turn over". Technically, it occurs when a Nun Sakinah (static N) or Tanween (double vowel) is followed by the letter Ba (ب). In this case, the sound of the 'N' changes into a concealed 'M' (Meem) with a nasal sound (Ghunnah).

Visualizing the Sound

In most copies of the Quran (Mushaf), you will see a tiny 'Meem' written over the Nun to indicate this rule. To pronounce it correct, your lips should come together gently. Imagine they are touching a piece of paper. Do not press them hard like a full, dry 'M' sound; it is a delicate, humming sound held for 2 counts. For example, the word 'Min-Ba'di' becomes 'Mim-Ba'di'.

Why Does This Rule Exist?

Arabic is a language of flow. Pronouncing a hard 'N' from the throat followed immediately by a 'B' from the lips is difficult and clunky. The 'M' acts as a bridge, as it shares properties with both letters (nasality with N, lip articulation with B). It makes the recitation smooth and melodious.