And a sign for them is the dead earth. We have brought it to life and brought forth from it grain, and from it they eat. 33 And We place therein gardens of the date-palms and vines; and We therein cause to gush forth springs. 34 That they may eat of the fruit thereof; and their hands worked it not. Will they not, therefore, give thanks? 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 a sign for them is the night. We remove from it [the light of] day, so they are [left] in darkness. 37 And the sun runs [on course] toward its stopping point. That is the determination of the Exalted in Might, the Knowing. 38 And the moon! For it We have decreed mansions till it reverteth like the old branch of a palm-tree. 39 It behoves not the sun to overtake the moon, neither does the night outstrip the day, each swimming in a sky. 40 Another sign for them is that We carried their offspring in the laden Ark. 41 We have created for them the like of it in which they ride. 42 If it were Our will, We could drown them: then there would be no helper [to hear their cry], nor could they be saved. 43 unless it be by an act of mercy from Us and a grant of life for a [further span of] time. 44 When it is said to them: "Beware of what is before you and what is past, that you may be treated with kindness;" 45 And whenever a sign comes to them from the signs of their Lord, they always turn away from it! 46 And when it is said to them: "Spend of that with which Allah has provided you," those who disbelieve say to those who believe: "Shall we feed those whom, if Allah willed, He (Himself) would have fed? You are only in a plain error." 47 They also say, 'When shall this promise come to pass, if you speak truly?' 48 They do not await except one blast which will seize them while they are disputing. 49 Then they would not be able to make a will, or go back to their people. 50