"Verily, Allāh has purchased of the believers their lives and their properties; for the price that theirs shall be the Paradise. They fight in Allāh's Cause, so they kill (others) and are killed. It is a promise in truth which is binding on Him in the Taurāt (Torah) and the Injeel (Gospel) and the Qur'ān. And who is truer to his covenant than Allāh? Then rejoice in the bargain which you have concluded. That is the supreme success."