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 And We have not taught him (Muhammad) poetry, nor is it meet for him. This is naught else than a Reminder and a Lecture making plain, 69 To warn the living*, and to prove the Word against disbelievers. (Only the believers are deemed alive in Allah’s sight.) 70 Do they not see that, among the things which Our hands have fashioned, We have created for them cattle of which they are the masters, 71 We have made the cattle subservient to them so they ride and consume them. 72 Benefits and (divers) drinks have they from them. Will they not then give thanks? 73 And take other gods apart from God that they may perhaps give them help. 74 (But) they shall not be able to assist them, and they shall be a host brought up before them. 75 So let not their speech grieve thee. Verily We! We know whatsoever they keep secret and whatsoever they make known. 76 Does man not see that We created him of a sperm drop, and lo! he is flagrantly contentious? 77 producing arguments against Us, and forgetting his own creation. He asks, "Who can give life back to bones after they have rotted away?" 78 Say: "He who brought them into being in the first instance will give them life [once again,] seeing that He has full knowledge of every act of creation: 79 He who produces for you fire out of the green tree, so that, lo! you kindle [your fires] therewith." 80 Is not He who created the heavens and the earth Able to create the likes of them? Yes, [it is so]; and He is the Knowing Creator. 81 His Being alone is such that when He wills a thing to be, He but says unto it, "Be" — and it is. 82 Therefore Purity is to Him in Whose Hand* is the control over all things and it is towards Him that you will be returned. (Used as a metaphor to mean Power). 83