And to (the people of) Thamud (We sent) their brother Salih. He said (conveying the same message): "O my people! Worship God alone: you have no deity other than Him. Assuredly a manifest proof has come to you from your Lord: this is a she-camel from God as a sign for you (of the truth of my Messengership). So leave her to pasture on God’s earth, and touch her with no harm lest a painful punishment should seize you.