"Surely Allah has bought of the believers their persons and their property for this, that they shall have the garden; they fight in Allah's way, so they slay and are slain; a promise which is binding on Him in the Taurat and the Injeel and the Quran; and who is more faithful to his covenant than Allah? Rejoice therefore in the pledge which you have made; and that is the mighty achievement. They who turn (to Allah), who serve (Him), who praise (Him), who fast, who bow down, who prostrate themselves, who enjoin what is good and forbid what is evil, and who keep the limits of Allah; and give good news to the believers."