Sahih Muslim 4682
صحيح مسلم#4682SahihIt has been narrated on the authority of Anas b. Malik who said that the Messenger of Allah (ﷺ) allowed Umm Sulaim and some other women of the Ansar to accompany him when he went to war; they would give water (to the soldiers) and would treat the wounded
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: 32:164