But if they dispute with you, say: I have submitted myself entirely to Allah and (so) every one who follows me; and say to those who have been given the Book and the unlearned people: Do you submit yourselves? So if they submit then indeed they follow the right way; and if they turn back, then upon you is only the delivery of the message and Allah sees the servants.

And do not believe but in him who follows your religion. Say: Surely the (true) guidance is the guidance of Allah-- that one may be given (by Him) the like of what you were given; or they would contend with you by an argument before your Lord. Say: Surely grace is in the hand of Allah, He gives it to whom He pleases; and Allah is Ample-giving, Knowing.