Kuwait Court of Cassation principle number 1532

Default interest, whether statutory or contractual. Its prerequisite. The debt which the debtor delayed paying must arise from a commercial obligation or a commercial act. A civil obligation. No default interest is due thereon. The consequences of this. An example concerning a claim for equivalent performance, the debt being civil. Its effect. Claiming interest thereon is prohibited, and every agreement thereon is void. Its connection with public policy. A judgment contravening this. Requires its cassation for violation of the law. An example concerning a claim for equivalent performance arising from unjust enrichment.