620
Musnad AhmedIt was narrated that ‘Ali (رضي الله عنه) said:
O Messenger of Allah (ﷺ), why do you choose to get married from among Quraysh and you ignore us? He said: "Have you anybody to suggest?" I said: Yes, the daughter of Hamzah. The Messenger of Allah (ﷺ) said: "She is not permissible for me (to marry), for she is the daughter of my brother through breastfeeding."
Reference: Musnad Ahmad 620
Arabic/English book : Book 5, Hadith 620
Arabic/English book : Book 5, Hadith 620