I say, and with God's help: His wiping is invalid; because the period for wiping begins from the onset of insanity; and insanity nullifies ablution, so likewise does wiping. Refer to: Tanwir al-Absar, Al-Durr al-Mukhtar, and Rad al-Mukhtar 1: 185, and Al-Hadiyya al-‘Alaiyya p. 40, and God knows best.