Yahya related to me from Malik from Ibn Shihab from Ubaydullah ibn Abdullah ibn Utba ibn Masud from his father that Umar ibn al- Khattab was asked about a woman and her daughter who were in the possession of the right hand, and whether one could have intercourse with one of them after the other Umar said, "I dislike both being permitted together." He then forbade that.
Muwatta Malik Book 28, Hadith 35
← Previous Hadith Yahya related to me from Malik that he had asked Ibn Shihab about a man who had a slave-girl as a wife, and then he bought her, and divorced her once. He said, "She is halal for him by the possession of the right hand as long as he does not make his divorce irrevocable. If he irrevocably divorces her, she is not halal for him by the possession of the right hand until she has married another husband."

Malik said that if a man rnarried a female slave and then she had a child by him, and then he bought her, she was not an umm walad for him because of the child born to him while she belonged to another, until she had had a child by him while she was in his possession after he had purchased her.

Malik said, "If he buys her and she is pregnant by him and she then gives birth while she belongs to him, she is his umm walad by that pregnancy, according to what we think, and Allah knows best."

Muwatta Malik Book 28, Hadith 34 Next Hadith → Yahya related to me from Malik from Ibn Shihab from Qabisa ibn Dhu'ayb that a man asked Uthman ibn Affan whether one could have intercourse with two sisters who one owned. Uthman said, "One ayat makes them halal, and one ayat makes them haram. As for me, I wouldn't like to do it." The man left him and met one of the companions of the Messenger of Allah, may Allah bless him and grant him peace, and asked him about it, and he said, "Had I any authority and I found someone who had done it, I would punish him as an example."

Ibn Shihab added, "I think that it was Ali ibn Abi Talib. "

Muwatta Malik Book 28, Hadith 36