Marriage

Malik :: Book 28 : Hadith 28.8.21

Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab said, "It is forbidden to be married to a woman and her paternal or maternal aunt at the same time, and for a man to have intercourse with a female slave who is carrying another man's child."

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star