Al-A'raf 7:75

Qala almalao allatheenaistakbaroo min qawmihi lillatheena istudAAifooliman amana minhum ataAAlamoona anna salihanmursalun min rabbihi qaloo inna bima orsilabihi mu/minoon

Said the eminent ones who were arrogant among his people to those who were oppressed - to those who believed among them, "Do you [actually] know that Ṣāliḥ is sent from his Lord?" They said, "Indeed we, in that with which he was sent, are believers."

The haughty chiefs of his people said to those of the oppressed who had believed (in the Messenger), “Do you know for sure that SāliH is a messenger from his Lord?” They said, “Of course, we believe in what he has been sent with.”