And to Thamud [We sent] their brother Salih. He said, "O my people, worship Allah ; you have no deity other than Him. He has produced you from the earth and settled you in it, so ask forgiveness of Him and then repent to Him. Indeed, my Lord is near and responsive."
They said, "O Salih, you were among us a man of promise before this. Do you forbid us to worship what our fathers worshipped? And indeed we are, about that to which you invite us, in disquieting doubt."
He said, "O my people, have you considered: if I should be upon clear evidence from my Lord and He has given me mercy from Himself, who would protect me from Allah if I disobeyed Him? So you would not increase me except in loss.
So when Our command came, We saved Salih and those who believed with him, by mercy from Us, and [saved them] from the disgrace of that day. Indeed, it is your Lord who is the Powerful, the Exalted in Might.