Kuwait Court of Cassation principle number 593

Foreign law is merely a material fact. Necessary consequence: the person asserting it must prove it before the trial court. It suffices for the person relying on that law to submit the substantive conflict-of-laws rules adopted by that law. It is not required to take the form of codified provisions. Condition thereof. The law must refer to a specified religious law, school of jurisprudence, or particular system that permits recourse to the applicable legal or religious-law rules, which have the force of statutory provisions enacted by the competent authority.