Sunan an-Nasa'i, 3306

It was narrated from Ibn 'Abbas that the daughter of Hamzah was suggested to Messenger of Allah (as a potential wife). He said:"She is the daughter of my brother through breast-feeding, and what becomes unlawful (for marriage) through breast-feeding is the same as that which becomes unlawful through lineage

Rapporté par Ibn 'Abbas : On a proposé la fille de Hamzah au Messager d’Allah ﷺ (comme épouse potentielle). Il a dit : « C’est la fille de mon frère par l’allaitement, et ce qui est interdit (au mariage) à cause de l’allaitement est identique à ce qui est interdit à cause de la parenté. »