Sufyan bin 'Uyaynah سفيان بن عيينة · The Chapters on Divorce

the Prophet (ﷺ) said: "If a woman claims that her husband has divorced her, and she brings a witness of good character (to testify) to that, her husband should be asked to swear an oath. If he swears, that will invalidate the testimony of the witness, but if he refuses then that will be equivalent to a second witness, and the divorce will take effect."

the Messenger of Allah (ﷺ) said: "The Pen is lifted from the minor, the insane person and the sleeper."

the Messenger of Allah said : "There is no divorce regarding that which one does not possess."

"There is no divorce before marriage."

"The Messenger of Allah (ﷺ) swore that he would not enter upon his wives for a month, and he stayed for twenty-nine days until, on the eve of the thirtieth, he entered upon me. I said: 'You swore not to enter upon us for a month.' He said: 'The month may be like this,' and he held up his (ten) fingers three times; 'or the month may be like this,' and he held up his fingers three times, keeping one…

the Messenger of Allah (ﷺ) swore to keep away from some of his wives for a month. On the twenty-ninth day, in the evening or the morning, it was said: "O Messenger of Allah, only twenty-nine days have passed." He said: "The month is twenty-nine days."

"The Messenger of Allah swore to keep away from his wives and declared them as unlawful for him, so he made something permissible forbidden, and he offered expiation for having sworn to do so."

"I had a wife whom I loved, but my father hated her. 'Umar mentioned that to the Prophet (ﷺ) and he ordered me to divorce her, so I divorced her."