Sunan Ibn Majah, Volume 4, Book 31, Hadith 3465 (DarusSalam) ⓘ

It was narrated from ‘Abdul-Muhaimin bin ‘Abbas bin Sahl bin Sa’d As- Sa’idi, from his father, that his grandfather said: “On the Day of Uhud, I recognized the one who wounded the face of the Messenger of Allah, the one who was washing the blood from the face of the Messenger of Allah and treating him, and the one who was bringing the water in a shield, and with what the wound was treated until the bleeding stopped. The one who was carrying the water in the shield was ‘Ali. The one who was treating the wound was Fatimah. When the bleeding would not stop, she burned a piece of a worn out mat and applied the ashes to it (the wound), then the bleeding stopped.

حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا ابْنُ أَبِي فُدَيْكٍ، عَنْ عَبْدِ الْمُهَيْمِنِ بْنِ عَبَّاسِ بْنِ سَهْلِ بْنِ سَعْدٍ السَّاعِدِيِّ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، قَالَ إِنِّي لأَعْرِفُ يَوْمَ أُحُدٍ مَنْ جَرَحَ وَجْهَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ وَمَنْ كَانَ يُرْقِئُ الْكَلْمَ مِنْ وَجْهِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ وَيُدَاوِيهِ وَمَنْ يَحْمِلُ الْمَاءَ فِي الْمِجَنِّ وَبِمَا دُووِيَ بِهِ الْكَلْمُ حَتَّى رَقَأَ ‏.‏ قَالَ أَمَّا مَنْ كَانَ يَحْمِلُ الْمَاءَ فِي الْمِجَنِّ فَعَلِيٌّ وَأَمَّا مَنْ كَانَ يُدَاوِي الْكَلْمَ فَفَاطِمَةُ أَحْرَقَتْ لَهُ حِينَ لَمْ يَرْقَأْ قِطْعَةَ حَصِيرٍ خَلَقٍ فَوَضَعَتْ رَمَادَهُ عَلَيْهِ فَرَقَأَ الْكَلْمُ ‏.‏