۞ 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 He placed therein firm hills rising above it, and blessed it and measured therein its sustenance in four Days, alike for (all) who ask; 10 He then inclined towards the heavens and it was smoke – thereupon He said to it and to the earth, “Both of you present yourselves, willingly or with reluctance”; they said, “We present ourselves, with zeal.” 11 Then He decreed them as seven heavens in two days, and revealed unto each heaven the command thereof; and We bedecked the nether heaven with lamps and placed therein a guard. That is the ordinance of the Mighty, the Knower. 12 But if they turn away, then say: I warn you of a thunderbolt like the thunderbolt (which fell of old upon the tribes) of A'ad and Thamud; 13 Recall what time the apostles came unto them from before them and behind them, saying: worship none save Allah. They said: had our Lord listed, He surely would have sent down angels, so verily in that wherewith ye have been sent we are disbelievers altogether. 14 Then as to Ad, they were unjustly proud in the land, and they said: Who is mightier in strength than we? Did they not see that Allah Who created them was mightier than they in strength, and they denied Our communications? 15 So We sent on them a furious wind in unlucky days, that We may make them taste the chastisement of abasement in this world's life; and certainly the chastisement of the hereafter is much more abasing, and they shall not be helped. 16 And as for the tribe of the Thamud We guided them but they preferred blindness to the guidance, wherefore the bolt of the torment of abjection laid hold of them because of that which they had been earning. 17 And We delivered those who believed and used to keep their duty to Allah. 18