Messenger of Allah, this is Umm Sulaim. She is holding a dagger. The Messenger of Allah (ﷺ) asked (her): What for are you holding this dagger? She said: I took it up so that I may tear open the belly of a polytheist who comes near me. The Messenger of Allah (ﷺ) began to smile (at these words). She said: Messenger of Allah, kill all those people-other than us-whom thou hast declared to be free (on the day of the Conquest of Mecca). (They embraced Islam because) they were defeated at your hands (and as such their Islam is not dependable). The Messenger of Allah (ﷺ) said: Umm Sulaim. God is sufficient (against the mischief of the polytheists) and He will be kind to us (so you need not carry this dagger).

It 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.

On the Day of Ubud some of the people, being defeated, left the Prophet (may peace he upon him), but Abu Talha stood before him covering him with a shield. Abu Talha was a powerful archer who broke two or three bows that day. When a man would pass by carrying a quiver containing arrows, he would say: Spare them for Abu Talha. Whenever the Prophet (way peace be upon him) raised his head to look at the people, Abd Talba would say: Prophet of Allah, may my father and my mother be thy ransom, do not raise your head lest you be struck by an arrow shot by the enemy. My neck is before your neck. The narrator said: I saw A'isha bint Abu Bakr and Umm Sulaim. Both of them had tucked up their garments, so I could me the anklets on their feet. They were carrying water-skins on their backs and would pour water into the mouths of the people. They would then go back (to the well), would fill them again and would return to pour water into the mouths of the soldiers. (On this day). Abu Talha's sword dropped down from his hands twice or thrice because of drowsiness.