Case 1: A specific item for Rs 1,000 immediately payable — buyer pays, then seller delivers.
Case 2: A book exchanged for a specified pen — both deliver concurrently.
Case 3: One currency or monetary countervalue for another — concurrent handover, subject to additional sarf requirements.
Identify what each party is exchanging before applying the rule.
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Kitab al-Buyu: Grain in Ears, House Keys, Transaction Costs and Delivery
Case 1: A specific item for Rs 1,000 immediately payable — buyer pays, then seller delivers.
Case 2: A book exchanged for a specified pen — both deliver concurrently.
Case 3: One currency or monetary countervalue for another — concurrent handover, subject to additional sarf requirements.
Identify what each party is exchanging before applying the rule.