Kuwait Court of Cassation principle number 626

The presumption is that volition exists when any disposition is made, unless the contrary is proved. - Notoriety of a state of insanity or mental deficiency, or the court's appointment of a curator. A presumption arises that the disposition was concluded in a state of insanity or mental deficiency, from the time of such notoriety or appointment. The effect of this. The burden of proving that the disposition was concluded during a lucid interval shifts to the person asserting it.