Sahih al-Bukhari 5372

Yahya ibn Bukayr narrated to us: al-Layth narrated to us, from ʿUqayl, from Ibn Shihab, who said: ʿUrwah informed me that Zaynab, daughter of Abu Salamah, told him that Umm Habibah, the wife of the Prophet, peace and blessings be upon him, said: I said, “Messenger of God, marry my sister, the daughter of Abu Sufyan.” He said, “Would you like that?” I said, “Yes. I am not the only woman married to you, and the dearest person to share in what is good with me is my sister.” He said, “That is not lawful for me.” I said, “Messenger of God, by God, we hear that you intend to marry Durrah, daughter of Abu Salamah.” He said, “The daughter of Umm Salamah?” I said, “Yes.” He said, “By God, even if she had not been my stepdaughter under my care, she would not be lawful for me. She is my niece through nursing: Thuwaybah nursed me and Abu Salamah. So do not offer your daughters or your sisters to me.” Shuʿayb also related from al-Zuhri, who said: ʿUrwah said, “Abu Lahab had freed Thuwaybah.”