Sahl bin 'Uthman bin Fars سهل بن عثمان بن فارس · The Book of Invoking Curses

'Asim, what did Allah's Messenger (ﷺ) say to you? 'Asim said to 'Uwaimir: You did not bring something good. Allah's Messenger (ﷺ) did not like this religious verdict that I sought from him. 'Uwaimir said: By Allah, I will not rest until I have asked him about it. 'Uwaimir proceeded until he came to Allah's Messenger (ﷺ) as he was sitting amidst people, and said: Messenger of Allah, tell me about a person who found a man with his wife.…

" And subsequebtly the separation became the practice of al-Mutala'inain." And this addition was also made:" She was pregnant and her son was ascribed to her, and it became customary that such (a son) would inherit her and she would inherit him in the share prescribed by Allah for her.