Anas bin Malik reported,

Umm Sulaym took up a dagger on the day of Hunayn and kept it with her. Abu Talha saw her and said, "Messenger of Allah, this is Umm Sulaym carrying a dagger."The Messenger of Allah ﷺ asked her, "What is this dagger for?"She replied, "I took it so that if any of the polytheists comes near me, I will rip open his belly with it."The Messenger of Allah ﷺ began to laugh.She then said, "Messenger of Allah, kill those who have joined us from the Talqa, for they fled and abandoned you."The Messenger of Allah ﷺ replied, "Umm Sulaym, Allah has already sufficed and done well."

Azami 7824

Sahih

عن أنس

أن أم سليم اتخذت يوم حنين خنجرا فكان معها، فرآها أبو طلحة فقال: يا رسول الله هذه أم سليم معها خنجر، فقال لها رسول الله ﷺ: ما هذا الخنجر؟ قالت اتخذته إن دنا مني أحد من المشركين بقرت به بطنه، فجعل رسول الله ﷺ يضحك، قالت: يا رسول الله اقتل من بعدنا من الطلقاء انهزموا بك، فقال رسول الله ﷺ: يا أم سليم! إن الله قد كفى وأحسن.

الأعظمي 7824صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Jihad
Chapter
Rulings on jihad and its etiquette
Section
Women's participation in military expeditions to serve the warriors
Numbering
Jami al-Kamil 7824 (2nd edition)
Azami 7824