Zayd exchanges one identified bicycle for Amr's specific computer table. Both sale objects are known.
One side demands, “You surrender yours first; I might hand mine over later.” That is not the concurrent delivery instruction given for the usual barter case.
Both sides making their property available for handover together preserves reciprocity. Special contractual or customary arrangements may need their own analysis.
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Kitab al-Buyu: Grain in Ears, House Keys, Transaction Costs and Delivery
Zayd exchanges one identified bicycle for Amr's specific computer table. Both sale objects are known.
One side demands, “You surrender yours first; I might hand mine over later.” That is not the concurrent delivery instruction given for the usual barter case.
Both sides making their property available for handover together preserves reciprocity. Special contractual or customary arrangements may need their own analysis.