The World Federation One Stop Fiqh

Ruling 2357

If the owner of some property becomes permanently insane or unconscious, the deposit agreement becomes void (bāṭil) and the safe keeper must immediately return it to his guardian or inform him of the deposit. If he does not do this and the property perishes, he must replace it. And if the insanity or unconsciousness of the owner is intermittent, the obligatory precaution (al‑iḥtiyāṭ al‑wājib) is that he must do exactly the same.