۞ And make mention (O Muhammad) of the brother of A'ad when he warned his folk among the wind-curved sandhills - and verily warners came and went before and after him - saying: Serve none but Allah. Lo! I fear for you the doom of a tremendous Day. 21 They said, 'What, hast thou come to pervert us from our gods? Then bring us that thou promisest us, if indeed thou speakest truly.' 22 He said: The knowledge is only with Allah, and I deliver to you the message with which I am sent, but I see you are a people who are ignorant. 23 And so, when they beheld it in the shape of a dense cloud approaching their valleys, they exclaimed, "This is but a heavy cloud which will bring us [welcome] rain!" [But Hud said:] "Nay, but it is the very thing which you [so contemptuously] sought to hasten - a wind bearing grievous suffering, 24 It will destroy everything at the bidding of its Lord." So in the morning there was nothing but their empty dwellings to be seen. That is how We requite the sinners. 25 And assuredly We had established them in that flourishing condition wherein We have not established you, and We had appointed for them hearing and sight and hearts; yet their hearing and sight and heart availed them not at all, they became wont to gainsay the revelations of Allah, and surrounded them that whereat they had been mocking. 26