Salam

Salam is a forward sale in which the price is paid entirely up front and the goods are delivered at a defined future date. It is an exception to the general rule that you cannot sell what you do not have, permitted because it serves a real need, historically that of a farmer needing cash before harvest. AAOIFI covers it in Shariah Standard No. 10, which applies 'whether the Institution is the buyer or the seller'. It is a live card structure: Dubai Islamic Bank's Covered Cards are built on salam with the cardholder as the seller, undertaking to deliver described commodities to the bank against an advance payment that funds the card. Because you are the seller, what you owe is a delivery of goods rather than a sum of money, which changes how late payment, early settlement and insolvency work. See the salam entry in structures.json.