Sahih Muslim 2635
صحيح مسلم#2635SahihUmm al-Fadl (Allah be pleased with her) is reported to have said that some people among the Companions of the Messenger of Allah (ﷺ) were in doubt about fasting on the day of 'Arafa and we were with him on that day. I (Umm al-Fadl) sent him a cup of milk and he was halting at 'Arafa, and he drank that
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 13:141