Hadith.4771 - Ḥammad ibn ʿIsa narrated from Shuʿayb, from Abu Baṣir, from Abu Abdullah (as), that Imam (as) who was asked about the validity of a divorce issued by a mentally impaired person (ma'tooh).
Imam (as) responded: "What do you mean by that?"
I said: "The foolish one who lacks sound reasoning."
Imam (as) replied: "Yes, it is valid."