BUT IF they turn away [from thee, O Prophet, know that] We have not sent thee to be their keeper: thou art not bound to do more than deliver the message [entrusted to thee]. And, behold, [such as turn away from Our messages are but impelled by the weakness and inconstancy of human nature: thus,] when We give man a taste of Our grace, he is prone to exult in it; but if misfortune befalls [any of] them in result of what their own hands have sent forth, then, behold, man shows how bereft he is of all gratitude!