But [let them always remember that] if We lengthen a human being's days, We also cause him to decline in his powers [when he grows old]: will they not, then, use their reason? 68 We have not taught (Muhammad) to versify, nor is it worthy of him. This is nothing but a reminder and illuminating discourse, 69 In order that it may warn him who is alive, and that the sentence may be justified on the infidels. 70 Have they not seen how We have created for them the cattle they master with Our Hands? 71 And have subjected the animals for them, so they ride some animals and eat some? 72 And they have (other) profits from them (besides), and they get (milk) to drink. Will they not then be grateful? 73 And they have taken beside Allah gods, hoping that haply they may be succoured. 74 It is not in their power to help them; but they (the worshippers) are unto them a host in arms. 75 Let not their words grieve you. Surely We know all things about them, what they conceal and what they reveal. 76 IS MAN, then, not aware that it is We who create him out of a [mere] drop of sperm - whereupon, lo! he shows himself endowed with the power to think and to argue? 77 And he makes comparisons for Us, and forgets his own (origin and) Creation: He says, "Who can give life to (dry) bones and decomposed ones (at that)?" 78 Say: 'He will quicken them who originated them the first time; He has knowledge of every creation; 79 "The same Who produces for you fire out of the green tree, when behold! ye kindle therewith (your own fires)! 80 Is, then, He who has created the heavens and the earth not able to create [anew] the like of those [who have died]? Yea, indeed - for He alone is the all-knowing Creator: 81 Whenever He decides to create something He has only to say, "Exist," and it comes into existence. 82 So glory to Him in Whose hands is the dominion of all things: and to Him will ye be all brought back. 83