The Prophet (ﷺ) 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."
Reference: Sahih al-Bukhari 237 In-book : Book 4, Hadith 104 USC-MSA web (English) : Vol. 1, Book 4, Hadith 238 (deprecated)
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