Sahih al-Bukhari 2645

Muslim ibn Ibrahim narrated to us: Hammam narrated to us: Qatada narrated to us, from Jabir ibn Zayd, from Ibn ʿAbbas, may Allah be pleased with them both, who said: Regarding Hamza’s daughter, the Prophet ﷺ said: “She is not lawful for me. What becomes unlawful through breastfeeding is what becomes unlawful through lineage; she is the daughter of my foster brother.”