Al-Quran- Sura No(14), Ayat(9)

Hath not the history of those before you reached you: the folk of Noah, and the tribes of A'ad and Thamud, and those after them? None save Allah knoweth them. Their messengers came unto them with clear proofs, but they thrust their hands into their mouths, and said: Lo! we disbelieve in that wherewith ye have been sent, and lo! we are in grave doubt concerning that to which ye call us.