۞ Say: What! do you indeed disbelieve in Him Who created the earth in two periods, and do you set up equals with Him? That is the Lord of the Worlds. 9 He placed firm mountains on the earth, and blessed it. He measured out its means of sustenance all in four Days; this is for those who ask for it. 10 Then He turned to the heavens, and it was smoke. So He said to it and the earth: "Come with willing obedience or perforce." They said: "We come willingly." 11 He formed the seven heavens in two days and revealed to each one its task. He decked the sky above the earth with torches and protected it from (intruders).. Such is the design of the Majestic and All-knowing God". 12 Then if they turn away say, “I warn you of a thunderbolt like the thunderbolt which came upon A’ad and Thamud.” 13 When their messengers came unto them from before them and behind them, saying: Worship none but Allah! they said: If our Lord had willed, He surely would have sent down angels (unto us), so lo! we are disbelievers in that wherewith ye have been sent. 14 As for the tribe of 'Aad - they grew stiff-necked on the earth without justification, and said: who is mightier than we in strength? Saw they not that Allah who created them, He was Mightier than they in strength? And Our signs they were wont to gainsay. 15 Therefor We let loose on them a raging wind in evil days, that We might make them taste the torment of disgrace in the life of the world. And verily the doom of the Hereafter will be more shameful, and they will not be helped. 16 As to the Thamud, We gave them Guidance, but they preferred blindness (of heart) to Guidance: so the stunning Punishment of humiliation seized them, because of what they had earned. 17 and We saved [only] those who had attained to faith and were conscious of Us. 18