Sahih al-Bukhari, Hadith 237 ⓘ
Narrated Abu Huraira: The Prophet said, "A wound which a Muslim receives in Allah's cause will appear on the Day of Resurrection as it was at the time of infliction; blood will be flowing from the wound and its color will be that of the blood but will smell like musk."
حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ، قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ، قَالَ أَخْبَرَنَا مَعْمَرٌ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " كُلُّ كَلْمٍ يُكْلَمُهُ الْمُسْلِمُ فِي سَبِيلِ اللَّهِ يَكُونُ يَوْمَ الْقِيَامَةِ كَهَيْئَتِهَا إِذْ طُعِنَتْ، تَفَجَّرُ دَمًا، اللَّوْنُ لَوْنُ الدَّمِ، وَالْعَرْفُ عَرْفُ الْمِسْكِ " .
also referenced under: Book 4, Hadith 104 (In-Book) & Volume 1, Book 4, Hadith 238 (USC-MSA)