Divorce by one with delirium and one who raves

Yunus (may Allah have mercy on him) said: A man from Syria, in whom I saw no harm, narrated to me: We were on a military expedition when a companion of ours was struck by an illness that made him talk incoherently, and he divorced his wife three times. When he recovered, the people said to him: You said such and such. He said: I have no knowledge of having said anything of the sort, little or much, and I do not recognize it. Then a man from among us rode to Umar bin Abd al-Aziz (may Allah have mercy on him) for some need of his. When he had settled his need, he asked him about that, and he left the matter to the man's own conscience (accepting his word, so that the divorce had no effect).

The same is reported through another chain.

Al-Hakam (may Allah have mercy on him) said: The divorce of one suffering from birsam who talks incoherently, and of one in a fever who talks incoherently, and the marriage of an insane person, carry no weight.

Al-Dahhak (may Allah have mercy on him) said: The divorce of one suffering from birsam, and of one whose mind is overcome, during their illness, is not valid.

Jabir bin Zayd (may Allah have mercy on him) said: For a person suffering from birsam who talks incoherently and does not understand what he is saying, his divorce and his freeing of slaves carry no weight as long as he remains in that state.

Amir al-Sha'bi (may Allah have mercy on him) said: The divorce of one suffering from birsam carries no weight.

The same is reported from Ibrahim (may Allah have mercy on him); they both (al-Sha'bi and Ibrahim) said: The divorce of one suffering from birsam is not valid.

Ibrahim (may Allah have mercy on him) said: The divorce of one suffering from birsam carries no weight, nor that of a person struck by some affliction other than intoxication that ruins his mind.

Ayyub (may Allah have mercy on him) said: I wrote to Abu Qilabah (may Allah have mercy on him) asking him about the divorce of one suffering from birsam. He wrote back to me that it depends on what the witnesses testify: if he was in his senses, his divorce is valid, and if he was not in his senses, his divorce is not valid.