The Messenger of Allah ﷺ said, "By the One in whose hand my soul rests, no one is wounded in the cause of Allah, and Allah knows best who is truly wounded in His cause, except that he will come on the Day of Resurrection with his wound gushing blood. Its color will be the color of blood, but its scent will be the scent of musk."
أن رسول الله ﷺ قال: والذي نفسي بيده، لا يكلم أحد في سبيل الله- والله أعلم بمن يكلم في سبيله- إلا جاء يوم القيامة، وجرحه يثعب دما، اللون لون الدم، والريح ريح المسك.
Malik narrated it in jihad (29) from Abu Zinad, from Araj, from Abu Hurairah, who related it. Bukhari narrated it in jihad and expeditions (2803) through the route of Malik, in the same manner. Muslim narrated it in leadership (1876:105) through the route of Sufyan bin Uyayna, from Abu Zinad.