Surely, Allah has bought their lives and their wealth from the believers, in exchange of (a promise) that Paradise shall be theirs. They fight in the way of Allah, and kill and are killed, on which there is a true promise (as made) in the Torah and the Injil and the Qur‘an. And who can be more faithful to his covenant than Allah? So, rejoice in the deal you have made, and that is the great achievement.