Jami at Tirmidhi 2085

حَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي حَازِمٍ، قَالَ:‏‏‏‏ سُئِلَ سَهْلُ بْنُ سَعْدٍ، وَأَنَا أَسْمَعُ، ‏‏‏‏‏‏بِأَيِّ شَيْءٍ دُووِيَ جُرْحُ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ؟ فَقَالَ:‏‏‏‏ مَا بَقِيَ أَحَدٌ أَعْلَمُ بِهِ مِنِّي، ‏‏‏‏‏‏كَانَ عَلِيٌّ يَأْتِي بِالْمَاءِ فِي تُرْسِهِ، ‏‏‏‏‏‏وَفَاطِمَةُ تَغْسِلُ عَنْهُ الدَّمَ، ‏‏‏‏‏‏وَأُحْرِقَ لَهُ حَصِيرٌ، ‏‏‏‏‏‏فَحَشَا بِهِ جُرْحُهُ ، ‏‏‏‏‏‏قَالَ أَبُو عِيسَى:‏‏‏‏ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ.

Abu Hazim said: While I was listening, Sahl bin Sa'd was asked: 'What were the wounds of the Messenger of Allah (S.A.W) treated with?' He said: 'None is alive who is more knowledgeable of it than I. 'Ali would come with water in his shield, and Fatimah would use it to wash his blood off,and a mat was burnt for him and his wounds were filled with it(its ashes).