It is narrated from Mu'adh bin Jabal (may Allah be pleased with him) that the Prophet Muhammad (peace and blessings be upon him) said: "Whoever among the Muslims strives in the way of Allah for the duration between two milkings of a she-camel, Paradise becomes obligatory for him. And whoever is wounded or injured in the way of Allah, he will come on the Day of Resurrection with his wound much greater than it was in the world; its color will be saffron and its fragrance will be that of musk."
Hadith Referenceسنن ترمذي / كتاب فضائل الجهاد عن رسول الله صلى الله عليه وسلم / 1657