Sahl bin Saad reported,

He was being asked about the wound of the Messenger of Allah ﷺ. He said, "By Allah, I know who was washing the wound of the Messenger of Allah ﷺ, who was pouring the water, and what was used to treat it. Fatimah, peace be upon her, the daughter of the Messenger of Allah ﷺ, was washing it, and Ali bin Abu Talib was pouring the water from a shield. When Fatimah saw that the water only made the bleeding worse, she took a piece of a straw mat, burned it, and pressed it against the wound, and the bleeding stopped. On that day his front tooth was broken, his face was wounded, and the helmet was shattered upon his head."

Bukhari 4075

Sahih

باب حدثنا قتيبة بن سعيد حدثنا يعقوب عن أبي حازم أنه سمع

سهل بن سعد

وهو يسأل عن جرح رسول الله ﷺ فقال أما والله إني لأعرف من كان يغسل جرح رسول الله ﷺ ومن كان يسكب الماء وبما دووي قال كانت فاطمة عليها السلام بنت رسول الله ﷺ تغسله وعلي بن أبي طالب يسكب الماء بالمجن فلما رأت فاطمة أن الماء لا يزيد الدم إلا كثرة أخذت قطعة من حصير فأحرقتها وألصقتها فاستمسك الدم وكسرت رباعيته يومئذ وجرح وجهه وكسرت البيضة على رأسه

البخاري 4075صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Expeditions
Chapter
What befell the Prophet ﷺ of wounds on the day of Uhud
Numbering
Darussalam 4075
Bukhari 4075