The book expressly says that a rāʾ with imālah is read lightly, citing مَجْرَاهَا. Imālah is a specific, transmitted recitational feature, not permission to tilt any fatḥah toward kasrah at will.
This example should be learned from an accurate recitation model. It is an exception tied to the recognized reading, not a new universal vowel rule.
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Imālah and the rāʾ in مَجْرَاهَا
Tafkhīm and Tarqīq — Alif, Divine-Name Lām and Rāʾ
The book expressly says that a rāʾ with imālah is read lightly, citing مَجْرَاهَا. Imālah is a specific, transmitted recitational feature, not permission to tilt any fatḥah toward kasrah at will.
This example should be learned from an accurate recitation model. It is an exception tied to the recognized reading, not a new universal vowel rule.