A deferred-payment sale (بيع مؤجل) is a sale in which payment is postponed to a clearly specified date or period. If a period is stated, it normally begins from delivery unless agreed otherwise.
Term explanation: Deferred-payment sale (بيع مؤجل): sale with payment postponed to a known future time.
This rule is especially important in financing because cost-plus sale (مرابحة) is valid only when the financing remains a real sale. The sequence of ownership, possession, risk and final sale must therefore be visible in the transaction.