Musannaf Ibn Abi Shayba 18:810

Abu Bakr narrated to us, he said: Hafs narrated to us, from Ash'ath, from al-Sha'bi, who said: Whatever the insane person commits during his state of insanity, it is upon his *'aqilah* (male paternal relatives). And whatever he commits during his state of lucidity, retaliation is taken from him.