Anas (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) used to go out for jihad with Umm Sulaym and some other women of the Ansar who stayed with her. They would give water and treat the wounded.
Imam Tirmidhi says: 1- This hadith is hasan sahih. 2- There is also a narration in this chapter from Rubayyi' bint Mu'awwidh.
Hadith Referenceسنن ترمذي / كتاب السير عن رسول الله صلى الله عليه وسلم / 1575