Kuwait Court of Cassation principle number 952

The cause of an obligation in a bilaterally binding contract is the other contracting party's obligation. - The general rules governing reciprocal obligations in bilaterally binding contracts entitle the person obliged to render a specified performance to withhold performance as long as the other contracting party has not performed his reciprocal obligations, or to seek rescission. - A lease is a bilaterally binding contract imposing on the lessor an obligation to deliver the leased property in return for the lessee's obligation to pay rent when due. An agreement to pay rent in advance entitles the lessor to retain the property or seek rescission in the event of failure to pay on time.