English: advance purchase
Alternate spelling: Al Salam, Bai al Salam, Bai Salam
Definition: Advance payment for goods which are to be delivered at a specified future date. Under normal circumstances, a sale cannot be effected unless the goods are in existence at the time of the bargain. However, this type of sale is an exception, provided the goods are defined and the date of delivery is fixed. The objects of sale must be tangible goods that can be defined as to quantity, quality and workmanship.
This mode of financing is often applied in the agricultural sector, where the bank advances money for various inputs to receive a share in the crop, which it then sells.