Madd Al-Sillah: Extension of the pronoun Ha (هـ) when between two moving letters.
Rule:
Dammah Ha → extends to small waw (ۥ)
Kasrah Ha → extends to small ya (ۦ)
(1) Sillah Sughra (2 counts): When followed by a non-hamza moving letter.
Examples: إِنَّهُۥ كَانَ، لَهُۥ مَا فِي، بِهِۦ سُلْطَاناً، لِرَبِّهِۦ لَكَنُودٌ
(2) Sillah Kubra (4-5 counts): When followed by a moving hamza qat'.
Examples: عِنْدَهُۥٓ إِلَّا، وَمَالَهُۥٓ إِذَا، بِهِۦٓ أَحَداً، لَهُۥٓ أَخْلَدَهُ، إِنَّهُۥٓ أَوَّابٌ
No Sillah when:
- Ha preceded by sukoon: مِنْهُ، عَنْهُ، فِيهِ
- Ha followed by sukoon: لَهُ الْمُلْكُ
- Not the pronoun Ha (هُوَ، هِيَ are not subject to this)
Question: What is the duration difference between Sillah Sughra and Kubra? Why is no Madd applied in "مِنْهُ" and "لَهُ الْمُلْكُ"?
Answer: Sillah Sughra: 2 counts. Sillah Kubra: 4-5 counts (because of hamza qat' after). "مِنْهُ": no mad because preceding letter is sukoon (Noon). "لَهُ الْمُلْكُ": no mad because following letter is sukoon (Lam of Al-Ta'rif)