LessonsKitab al-Buyu: Grain in Ears, House Keys, Transaction Costs and DeliveryQuiz

Example: 100 kg of grain is purchased for a specified weight of monetary metal coins.
1. Weighing out the 100 kg completes the seller's delivery obligation.
2. Weighing the stipulated coinage completes the buyer's payment obligation.

The word weighing is used in both, but the legal function is different.

Modern transfer or card-processing fees require separate analysis of contracts, custom and contemporary practice; Quduri's medieval coin terminology does not automatically settle them.

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Different weighing tasks mean different costs

Kitab al-Buyu: Grain in Ears, House Keys, Transaction Costs and Delivery

Example: 100 kg of grain is purchased for a specified weight of monetary metal coins.
1. Weighing out the 100 kg completes the seller's delivery obligation.
2. Weighing the stipulated coinage completes the buyer's payment obligation.

The word weighing is used in both, but the legal function is different.

Modern transfer or card-processing fees require separate analysis of contracts, custom and contemporary practice; Quduri's medieval coin terminology does not automatically settle them.