Riyad us Saliheen: Hadith 1295

The Prophet (ﷺ) said, "Jannah becomes incumbent for a Muslim who fights for the Cause of Allah for a period as long as the time between two consecutive turns of milking a she-camel. He who receives a wound or a bruise in the Cause of Allah will appear on the Day of Resurrection as fresh as possible, its colour will be the colour of saffron and its fragrance will be that of musk."

[At-Tirmidhi and Abu Dawud].