إن شاء أخذ الموجود بحصته من الثمن
Translation: The buyer may take the amount present for its proportionate share of the price.
Bi-hissatihi min al-thaman means allocating the agreed price to the quantity actually available. If 100 qafiz were promised for 100 dirhams and only 80 exist, the buyer may take the 80 for 80 dirhams.
The price can be apportioned because units of this measured grain function as quantities that correspond to parts of the consideration.
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Kitab al-Buyu: Shortage, Surplus, Buyer Options and Price Allocation
إن شاء أخذ الموجود بحصته من الثمن
Translation: The buyer may take the amount present for its proportionate share of the price.
Bi-hissatihi min al-thaman means allocating the agreed price to the quantity actually available. If 100 qafiz were promised for 100 dirhams and only 80 exist, the buyer may take the 80 for 80 dirhams.
The price can be apportioned because units of this measured grain function as quantities that correspond to parts of the consideration.