The Life of this World is Fleeting Enjoyment

"Know that the life of this world is only play and amusement, pomp and mutual boasting among you, and rivalry in respect of wealth and children. (It is) like a rain (Ghayth), thereof the growth is pleasing to the tiller; afterwards it dries up and you see it turning yellow; then it becomes straw. But in the Hereafter (there is) a severe torment, and (there is) forgiveness from Allah and (His) pleasure. And the life of this world is only a deceiving enjoyment." [57:20]

"Allah is He Who created you in (a state of) weakness, then gave you strength after weakness, then after strength gave (you) weakness and gray hair. He creates what He wills. And He is the All-Knowing, the All-Powerful." (30:54)