He is it Who has inducted you on earth and made one generation inherit the other, and He promoted and exalted, in rank, honour, estimation, development, power, and wealth some above others, and arranged you in grades so as to test your qualities with what He has ordained for you. You had better realize that Allah, your Creator, is swift indeed in putting the law in execution and in effecting just retribution and He is also Ghafurun and Rahimun.