Kuwait Court of Cassation principle number 1150

The contracting party's obligation. It must rest on a cause, and that cause must be lawful. Failure thereof. Its implication. The contract lacks one of its essential elements. Its effect. Its nullity. - The cause of an obligation is the first immediate purpose that the contracting party seeks to achieve by consenting to assume the obligation. The cause encompasses the impelling, inducing motive. Its condition. It must have been contemplated in contracting, in that the other contracting party knows or is presumed to know it. - The existence and lawfulness of the cause of an obligation. The relevant time is the time of conclusion of the contract.