Translation:

47. Say: "No reward do I ask of you: it is (all) in your interest: my reward is only due from Allah: and He is Witness to all things."

Notes (Tafseer)

3859. Cf. x. 72. The second argument is that he has nothing to gain from them. His message is for their own good. He is willing to suffer persecution and insult, because he has to fulfil his mission from Allah.