The buyer must pay the Salam price in full when the contract is concluded. Otherwise both sides would merely owe something to each other in the future: one side owes money and the other owes goods.
Full payment also serves the practical purpose of Salam—giving the seller immediate finance. The jurists are agreed on full advance payment, while the Maliki view mentioned allows a short two- or three-day concession provided that delay was not built into the agreement.
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Advance-Purchase Sale (سَلَم): Why Future Delivery Is Allowed
The buyer must pay the Salam price in full when the contract is concluded. Otherwise both sides would merely owe something to each other in the future: one side owes money and the other owes goods.
Full payment also serves the practical purpose of Salam—giving the seller immediate finance. The jurists are agreed on full advance payment, while the Maliki view mentioned allows a short two- or three-day concession provided that delay was not built into the agreement.