Kuwait Court of Cassation principle number 3659

Entitlement to default interest on a debt. Its criterion. The debt must arise from a commercial obligation or a commercial transaction. The debt being civil. Its effect. Claiming interest on it is prohibited as usury forbidden under Sharia; every agreement to the contrary is void, such nullity may be invoked at any stage of the proceedings, and the court may rule on it of its own motion. A judgment contravening this. Requires its cassation.