(And they said: O wizard) O knowledgeable wizard, as a form of respect, because magicians were venerated amongst them; (Entreat thy Lord for us by the pact that He hath made with thee) ask your Lord by the pact Allah made with you-the pact was that if they believed He will remove His punishment from them-this is why they asked him by the pact that Allah had made. (Lo! we verily will walk aright) we will believe in you and in that which you brought.