Ibta‘a: bought.
Sabrah: a defined heap, here of grain.
Qafiz: a historical grain-capacity measure.
Bi-hissatihi min al-thaman: at its proportionate share of the price.
Bi-jumlat al-thaman: for the entire aggregate price.
Dhira‘: a cubit or length measure.
Kullu dhira‘ bi-dirham: one dirham assigned to each cubit.
Fasakh al-bay‘: rescind the sale.
The contrast between “proportionate share” and “full price” helps distinguish the cases.
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Kitab al-Buyu: Shortage, Surplus, Buyer Options and Price Allocation
Ibta‘a: bought.
Sabrah: a defined heap, here of grain.
Qafiz: a historical grain-capacity measure.
Bi-hissatihi min al-thaman: at its proportionate share of the price.
Bi-jumlat al-thaman: for the entire aggregate price.
Dhira‘: a cubit or length measure.
Kullu dhira‘ bi-dirham: one dirham assigned to each cubit.
Fasakh al-bay‘: rescind the sale.
The contrast between “proportionate share” and “full price” helps distinguish the cases.