Sunan Ibn Majah 1947
سنن ابن ماجه#1947SahihIt was narrated from Zainab bint Abi Salamah:that the wives of the Prophet all differed with 'Aishah and refused to allow anyone with ties of breastfeeding like Salim, the freed salve of Abu Hudhaifah, to enter upon them. They said: “How do we know? That may be a concession granted only to Salim.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 9:103