We split them up into twelve tribal communities, and We revealed to Moses, when his people asked him for water, [saying], ‘Strike the rock with your staff,’ whereat twelve fountains gushed forth from it. Every tribe came to know its drinking-place. And We shaded them with clouds, and We sent down to them manna and quails: ‘Eat of the good things We have provided you.’ And they did not wrong Us, but they used to wrong [only] themselves.