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 did not give Prophet Muhammad, knowledge of poetry, nor is it befitting for him. It is not but a message and a clear Qur'an 69 In order that it may warn him who is alive, and that the sentence may be justified on the infidels. 70 Do they not see the cattle among things We have fashioned by Our power, which they own, 71 And that We have subjected them to their (use)? of them some do carry them and some they eat: 72 and may have [yet other] benefits from them, and [milk] to drink? Will they not, then, be grateful? 73 And they have taken gods besides Allah that they may be helped. 74 (But) they shall not be able to assist them, and they shall be a host brought up before them. 75 Therefore let not their speech grieve you; surely We know what they do in secret and what they do openly. 76 Beholdest not man that We have created him from a sperm? Yet lo! he is a manifest disputer? 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 created you the first time. He has knowledge of every creation, 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 like of them? Yea! and He is the Creator (of all), the Knower. 81 Whenever He decides to create something He has only to say, "Exist," and it comes into existence. 82 Wherefore hallowed be He in whose hand is the governance of everything, and unto whom ye shall be returned. 83