If someone is owed something that he can claim after a certain period, in the event that he settles the debt for a lower amount with the intention of relinquishing his claim to part of the debt and getting the rest immediately, there is no problem. This rule applies when the claim is for gold or silver or for a commodity sold by weight or measure.
As for other commodities, it is permitted (jāʾiz) for a creditor to settle his claim with a debtor or with someone else for less than the claim, or to sell the debt, as will be explained in