Kuwait Court of Cassation principle number 605

Foreign law is merely a material fact. Necessary consequence thereof: it must be proved by the person asserting it before the court of merits. It is sufficient for the person relying on that law to submit the substantive choice-of-law rules - 469 - Procedure adopted by that law. It need not be in the form of codified provisions. Condition thereof. The law must refer to a specified body of religious law, school of thought or particular system permitting recourse to the applicable legal rules or religious law, which have the force of legal provisions enacted by the competent authority.