Al-Salaf or Salam transaction (i.e., a sale of payment in advance) refers to a sale transaction whereby a buyer purchases a clearly defined item to be delivered in a fixed future date and pays its price in advance, in the contracting session. In this hadeeth, ‘AbdullahIbn ‘Abbaas (may Allah be pleased with them)stated that when the Prophet ﷺ migrated to Al-Madeenah, he ﷺ found the Ansaar conducting Salaf transactions - also called Salam, because it stipulates immediate payment of the specified price in the contracting session. They used to sell crops to be delivered within one, two, or three years, for an immediate payment paid in the contracting session. The Prophet ﷺ approved such transactions, yet set certain conditions for their validity. He ﷺ said that when someone buys crops: dates, wheat, or barley for example, to be delivered after one or two years for an immediate payment made in the contracting session, the purchased commodity must be clearly defined and specified. This means that the commodity must be of a specified weight and measure, and the delivery date must be fixed, e.g., a year or two, rather than an unspecified future time, to avoid potential Gharar (i.e., risk and uncertainty) and ambiguity that could occur in such sale transactions, and to eliminate potential disputes and conflicts. .