A Salam Sukuk represents fractional ownership of the capital of a Salam transaction, where the Salam capital is constituted by an advance payment to a counterparty as supplier of a commodity (the subject-matter) to be delivered at a future date. This type of Sukuk is non-tradable, since the subject-matter is considered to be a financial asset (a receivable). The gross return to the Sukuk holders consists of the margin or spread between the purchase price of the subject-matter and its selling price following delivery. In certain Sukuk issues, a third party gives an undertaking that the subject-matter will be sold at a price exceeding the purchase price by a specified margin. This may be achieved by means of a parallel Salam transaction in which a third party purchases the subject-matter for delivery on the same delivery date as in the original Salam contract.