Quran 7:66 — The Purgatory (Al-A'araf)

The leaders who disbelieved among his people said, "We see that you are behaving foolishly, and we think that you are a liar."

[7:65] To 'Ãd we sent their brother Hûd. He said, "O my people, worship GOD; you have no other god beside Him. Would you then observe righteousness?"

[7:67] He said, "O my people, there is no foolishness in me; I am a messenger from the Lord of the universe.