And assuredly Allah took a bond from the Children of Isra'il, and We raised from amongst them twelve wardens. And Allah said: verily I am with you, if ye establish prayer and give the poor-rate and believe in My apostles and support them and lend unto Allah a goodly loan, I shall surely expiate for you your misdeeds and surely shall make you enter the Gardens whereunder rivers flow; then whosoever of you shall disbelieve thereafter, he hath surely strayed from the level way.