۞ Say, "Do you indeed disbelieve in He who created the earth in two days and attribute to Him equals? That is the Lord of the worlds." 9 In four days He placed the mountains on it, blessed it, and equally measured out sustenance for those who seek sustenance. 10 Then He directed Himself to the heaven and it is a vapor, so He said to it and to the earth: Come both, willingly or unwillingly. They both said: We come willingly. 11 In two days He determined them seven heavens, and He revealed to each heaven its commands. We decorated the lowest heaven with lamps and preserve them. Such is the decree of the Almighty, the Knower. 12 Then if they turn away say, “I warn you of a thunderbolt like the thunderbolt which came upon A’ad and Thamud.” 13 Lo! There came unto them [God's] apostles, speaking of what lay open before them and what was [still] beyond their ken, [and calling unto them,] "Worship none but God!" They answered: "If our Sustainer had willed [us to believe in what you say,] He would have sent down angels [as His message-bearers]. As it is, behold, we deny that there is any truth in what you [claim to] have been sent with!" 14 As for the tribe of 'Ad, they behaved arrogantly in the land without any justification and said, "Who is mightier than we in power?" Did they not see that God, who created them, was mightier than they in power? Still they continued to deny Our signs, 15 We sent upon them a violent wind during a few ill-fated days to make them suffer a disgraceful torment in this life. Their torment in the life to come will be even more disgraceful and they will not receive any help. 16 And as for Thamud, We guided them, but they preferred blindness over guidance, so the thunderbolt of humiliating punishment seized them for what they used to earn. 17 and We saved [only] those who had attained to faith and were conscious of Us. 18