We split them up into twelve tribes, communities, and inspired Moses when his people asked for water: "Strike the rock with your staff." Twelve springs gushed forth from it. Each set of people knew its own drinking-place. We shaded them with clouds and sent down manna and quail for them: "Eat some of the wholesome things which We have supplied you with." Yet they did not harm Us, but they themselves were the persons whom they harmed.