The dead land is a sign for them. We revive it, and from it produce grain from which they eat. 33 And We have made therein gardens of date-palms and grapes, and We have caused springs of water to gush forth therein. 34 That they may eat of His fruit. And their hands have not produced it, so will they not be grateful? 35 Purity is to Him Who created all pairs, from what the earth grows, and of themselves, and from the things they do not know. 36 And there is a sign in the night for them. We strip off the day from it and they are left in darkness, 37 And the sun runs his course for a period determined for him: that is the decree of (Him), the Exalted in Might, the All-Knowing. 38 And the moon, We have determined it in phases till it returns like an old palmbranch. 39 It is not permitted to the sun that it should overtake the moon, nor can the night outstrip the day: each in an orbit, they float. 40 And [it ought to be] a sign for them that We bear their offspring [over the seas] in laden ships, 41 and created for them similar things to ride. 42 If it were Our Will, We could drown them: then would there be no helper (to hear their cry), nor could they be delivered, 43 It is only Our Mercy (that rescues them) and enables enjoyment of life for a while. 44 And when it is said to them: Guard against what is before you and what is behind you, that mercy may be had on you. 45 None of the signs of their Lord ever comes to them but they turn away from it. 46 And when it is said to them, "Spend from that which Allah has provided for you," those who disbelieve say to those who believe, "Should we feed one whom, if Allah had willed, He would have fed? You are not but in clear error." 47 And they say: "When will this promise (i.e. Resurrection) be fulfilled, if you are truthful?" 48 They wait not for aught but a single cry which will overtake them while they yet contend with one another. 49 And they will not be able [to give] any instruction, nor to their people can they return. 50