The next exception is a temporary kasrah, introduced by the connected pronunciation rather than belonging permanently to the word. The book cites أَمِ ارْتَابُوا and إِنِ ارْتَبْتُمْ.
Such a kasrah does not automatically lighten the following sākin rāʾ. The determining question is whether the vowel is original or incidental to how the words are joined.
Opening interactive controls...
Temporary kasrah does not make this rāʾ light
Tafkhīm and Tarqīq — Alif, Divine-Name Lām and Rāʾ
The next exception is a temporary kasrah, introduced by the connected pronunciation rather than belonging permanently to the word. The book cites أَمِ ارْتَابُوا and إِنِ ارْتَبْتُمْ.
Such a kasrah does not automatically lighten the following sākin rāʾ. The determining question is whether the vowel is original or incidental to how the words are joined.