We only say that some of our gods have possessed you with evil [i.e., insanity]." He said, "Indeed, I call Allāh to witness, and witness [yourselves] that I am free from whatever you associate with Allāh
Indeed, I have relied upon Allāh, my Lord and your Lord. There is no creature but that He holds it by its forelock [i.e., controls it]. Indeed, my Lord is on a path [that is] straight.
But if you turn away, then I have already conveyed that with which I was sent to you. My Lord will give succession to a people other than you, and you will not harm Him at all. Indeed my Lord is, over all things, Guardian."
And they were [therefore] followed in this world with a curse and [as well] on the Day of Resurrection. Unquestionably, ʿAad denied their Lord; then away with ʿAad, the people of Hūd.
And to Thamūd [We sent] their brother Ṣāliḥ. He said, "O my people, worship Allāh; 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 Ṣāliḥ, 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."