LessonsRiba in Particular Exchanges: Flour, Meat, Dates, Oils and Composite GoodsQuiz

ولا يجوز بيع الحنطة بالدقيق
Translation: Selling wheat in exchange for flour made from that wheat is not permitted.

Daqiq means flour. Quduri is discussing direct barter of wheat against flour milled from wheat, not the ordinary purchase of flour for a known money price.

Whole grains and flour derive from one material, yet they pack differently within the same volumetric vessel. Equal stated volumes therefore do not establish the required correspondence in this derived same-genus exchange. The uncertainty about equality makes the exchange impermissible in the stated classical rule.

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Wheat exchanged for flour made from wheat

Riba in Particular Exchanges: Flour, Meat, Dates, Oils and Composite Goods

ولا يجوز بيع الحنطة بالدقيق
Translation: Selling wheat in exchange for flour made from that wheat is not permitted.

Daqiq means flour. Quduri is discussing direct barter of wheat against flour milled from wheat, not the ordinary purchase of flour for a known money price.

Whole grains and flour derive from one material, yet they pack differently within the same volumetric vessel. Equal stated volumes therefore do not establish the required correspondence in this derived same-genus exchange. The uncertainty about equality makes the exchange impermissible in the stated classical rule.