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 poetry, nor is it meet for him; it is nothing but a reminder and a plain Quran, 69 So that he may warn him who is alive and feels, and justify the word against those who do not believe. 70 Observe they not that We have created for them, of that which Our hands have worked, cattle: so that they are their owners. 71 And We have subjected them to them, so some of them they have to ride upon, and some of them they eat. 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 (other) gods beside Allah, in order that they may be helped. 74 They have not the power to help them: but they will be brought up (before Our Judgment-seat) as a troop (to be condemned). 75 So be not grieved by what they say. We certainly know what they hide and disclose. 76 Does not man see that We have created him from Nutfah (mixed male and female discharge semen drops). Yet behold! He (stands forth) as an open opponent. 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 thou: He shall quicken them Who brought them forth for the first time, and He is of every kind of creation the Knower! 79 who has made fire for you from the green tree with which you kindle' 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 command is only when He intends a thing that He says to 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