Sunan an-Nasa'i 3286
سنن النسائي#3286SahihIt was narrated from 'Irak bin Malik that Zainab bint Abi Salamah told him, that Umm Habibah said to the Messenger of Allah:"We have been saying that you want to marry Durrah bint Abi Salamah." The Messenger of Allah said: "As a co-wife to Umm Salamah? Even if I were not married to Umm Salamah, she would not be permissible to me, for her father is my brother through breast-feeding
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 26:91