And to Thamûd (We sent) their brother Salih. He said, "O my people! Worship Allah! In no way do you have any god other than He. A Supremely evident (sign) from your Lord has already come to you. This is the she-camel of Allah to be a sign for you. So leave her out (free) to eat in the earth of Allah, and do not touch her with any odious (treatment) (lest) then a painful torment should take you (away).