Rule 2: Radical wāw also drops between a fatḥah-bearing imperfect prefix and a fatḥah-bearing middle radical when the middle or final radical is a guttural letter.
يَوْهَبُ → يَهَبُ — he gives; the middle radical hāʾ is guttural.
يَوْضَعُ → يَضَعُ — he places; the final radical ʿayn is guttural.
Unlike Rule 1, the middle radical here has fatḥah, not kasrah. The guttural condition is what distinguishes the two rules.
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Rule 2: Elision with a Guttural Radical
Weak-Initial Roots: Elision, Substitution, Assimilation and Short Paradigms
Rule 2: Radical wāw also drops between a fatḥah-bearing imperfect prefix and a fatḥah-bearing middle radical when the middle or final radical is a guttural letter.
يَوْهَبُ → يَهَبُ — he gives; the middle radical hāʾ is guttural.
يَوْضَعُ → يَضَعُ — he places; the final radical ʿayn is guttural.
Unlike Rule 1, the middle radical here has fatḥah, not kasrah. The guttural condition is what distinguishes the two rules.