It 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.`