If ṣilah applies to a pronoun hāʾ with kasrah, the vowel is extended with a yāʾ-like lengthening sound. The kasrah remains identifiable while the connected recitation is prolonged appropriately.
First decide the hāʾ vowel; then inspect both neighboring consonants to decide whether ṣilah applies.
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Kasrah produces a yāʾ-like ṣilah
Rules of Hāʾ al-Ḍamīr: Vowels, Ṣilah and Exceptions
If ṣilah applies to a pronoun hāʾ with kasrah, the vowel is extended with a yāʾ-like lengthening sound. The kasrah remains identifiable while the connected recitation is prolonged appropriately.
First decide the hāʾ vowel; then inspect both neighboring consonants to decide whether ṣilah applies.