﴿ قُلْ أَىُّ شَىْءٍ أَكْبَرُ شَهَٰدَةًۭ ۖ قُلِ ٱللَّهُ ۖ شَهِيدٌۢ بَيْنِى وَبَيْنَكُمْ ۚ وَأُوحِىَ إِلَىَّ هَٰذَا ٱلْقُرْءَانُ لِأُنذِرَكُم بِهِۦ وَمَنۢ بَلَغَ ۚ أَئِنَّكُمْ لَتَشْهَدُونَ أَنَّ مَعَ ٱللَّهِ ءَالِهَةً أُخْرَىٰ ۚ قُل لَّآ أَشْهَدُ ۚ قُلْ إِنَّمَا هُوَ إِلَٰهٌۭ وَٰحِدٌۭ وَإِنَّنِى بَرِىٓءٌۭ مِّمَّا تُشْرِكُونَ ﴾

“Say: "What could most weightily bear witness to the truth?" Say: "God is witness between me and you; and this Qur’an has been revealed unto me so that on the strength thereof I might warn you and all whom it may reach." Could you in truth bear witness that there are other deities side by side with God? Say: "I bear no [such] witness!" Say: "He is the One God; and, behold, far be it from me to ascribe divinity, as, you do, to aught beside Him!"”

When they said to the Prophet (pbuh) bring us a witness to testify that you are a prophet, Allah said: (Say) to them, O Muhammad: (What thing is of most weight) that is, fairer and most pleasing (in testimony?) If they answer, fine, if not (Say: Allah is witness between you and me) that I am His Messenger and this Qur'an is His speech. (And this Qur'an hath been inspired in me) and that Gabriel has brought down this Qur'an to me, (that I may warn therewith you) with the Qur'an (and whomsoever it may reach) I am a warner to him. (Do ye) O people of Mecca (in sooth bear witness that there are gods beside Allah) i.e. idols: you say that they are Allah's daughters? And if they bear witness, (Say: I bear no such witness) with you. (Say) O Muhammad: (He is only One God) the true God is only One God. (Lo! I am innocent of that which you associate (with Him)) of idols in worship.