Sahih al-Bukhari Book 68, Hadith 3
(Divorcing my wife during her menses) was counted as one legal divorce.
Ibn `Umar said: "I divorced my wife while she was menstruating. `Umar mentioned that to the Prophet . The Prophet (ﷺ) said, (to my father), "Let your son take her back." I asked (Ibn `Umar), "Is such a divorce counted (i.e. as one legal divorce)?" Ibn `Umar said, "Of course." Narrated Yunus bin Jubair: Ibn `Umar said, "The Prophet (ﷺ) said to `Umar, 'Order him (Ibn `Umar) to take her back.' " I asked, "Is such a divorce counted (as one legal divorce)?" Ibn `Umar said, "What do you think if someone becomes helpless and foolish?"
I asked Az-Zuhri, "Which of the wives of the Prophet (ﷺ) sought refuge with Allah from him?" He said "I was told by 'Urwa that `Aisha said, 'When the daughter of Al-Jaun was brought to Allah's Messenger (ﷺ) (as his bride) and he went near her, she said, "I seek refuge with Allah from you." He said, "You have sought refuge with The Great; return to your family."