Sahih al-Bukhari 2911
Narrated Sahl:
That he was asked about the wound of the Prophet (ﷺ) on the day (of the battle) of Uhud. He said, "The 
face of the Prophet (ﷺ) as wounded and one of his front teeth as broken and the helmet over his head was 
smashed. Fatima washed of the blood while `Ali held water. When she saw that bleeding was 
increasing continuously, she burnt a mat (of date-palm leaves) till it turned into ashes which she put 
over the wound and thus the bleeding ceased."
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ أَبِي حَازِمٍ، عَنْ أَبِيهِ، عَنْ سَهْلٍ ـ رضى الله عنه ـ أَنَّهُ سُئِلَ عَنْ جُرْحِ النَّبِيِّ، صلى الله عليه وسلم يَوْمَ أُحُدٍ‏.‏ فَقَالَ جُرِحَ وَجْهُ النَّبِيِّ صلى الله عليه وسلم وَكُسِرَتْ رَبَاعِيَتُهُ وَهُشِمَتِ الْبَيْضَةُ عَلَى رَأْسِهِ، فَكَانَتْ فَاطِمَةُ ـ عَلَيْهَا السَّلاَمُ ـ تَغْسِلُ الدَّمَ وَعَلِيٌّ يُمْسِكُ، فَلَمَّا رَأَتْ أَنَّ الدَّمَ لاَ يَزِيدُ إِلاَّ كَثْرَةً أَخَذَتْ حَصِيرًا فَأَحْرَقَتْهُ حَتَّى صَارَ رَمَادًا ثُمَّ أَلْزَقَتْهُ، فَاسْتَمْسَكَ الدَّمُ‏.‏