Say: "What thing is most weighty in evidence?" Say: "(Allah) is witness between me and you; This Qur´an hath been revealed to me by inspiration, that I may warn you and all whom it reaches. Can ye possibly bear witness that besides Allah there is another Allah." Say: "Nay! I cannot bear witness!" Say: "But in truth He is the one Allah, and I truly am innocent of (your blasphemy of) joining others with Him."
M. Pickthall (English)
Say (O Muhammad) : What thing is of most weight in testimony? Say: Allah is witness between you and me. And this Qur'an hath been inspired in me, that I may warn therewith you and whomsoever it may reach. Do ye in truth bear witness that there are gods beside Allah? Say : I bear no such witness. Say: He is only One God. Lo! I am innocent of that which ye associate (with Him).
