Say-O Messenger to these polytheists-: "What thing is greatest as a testimony in the proof of my truthfulness in what I informed you of that I am the Messenger of Allah?" Say: "Allah is witness between me and you, meaning: He is the Knower of what I brought you with and what you are saying to me, and Allah revealed to me this Qur'an in order that I warn you by it of His punishment that it befall you, and I warn by it whoever it reaches of the nations. Indeed you surely acknowledge that with Allah are other deities you associate with Him." Say to them-O Messenger-: "Indeed I do not bear witness to what you have acknowledged, Allah is only one God having no partner, and indeed I am free from every partner you worship along with Him."