Al-An'aam 6:19

Say, “Whose testimony is the greatest?” Say, “Allah is Witness between me and you. This Qur’an has been revealed to me so that I may warn you thereby and whomsoever it reaches[4]. Do you really bear witness that there are other gods besides Allah?” Say, “I do not bear such witness.” Say, “Indeed, He is One God, and I disown all that you associate [with Him].”

[4] At every time and place until the Day of Judgment.

Say, "What thing is greatest in testimony?" Say, "Allāh is witness between me and you. And this Qur’ān was revealed to me that I may warn you thereby and whomever it reaches.[298] Do you [truly] testify that with Allāh there are other deities?" Say, "I will not testify [with you]." Say, "Indeed, He is but one God, and indeed, I am free of what you associate [with Him]."

[298] At every time and place until the Day of Judgement.

19. Say (O Muhammad صلى الله عليه وسلم): "What thing is the most great in witness?" Say: "Allâh (the Most Great!) is Witness between me and you; this Qur’ân has been revealed to me that I may therewith warn you and whomsoever it may reach. Can you verily bear witness that besides Allâh there are other âlihah (gods)?" Say "I bear no (such) witness!" Say: "But in truth He (Allâh) is the only one Ilâh (God). And truly I am innocent of what you join in worship with Him."

Say (O Muhammad): What thing is of most weight in testimony? Say: Allah is Witness between me and you. And this Qur'an hath been inspired in me, that I may warn therewith you and whomsoever it may reach. Do ye in sooth bear witness that there are gods beside Allah? Say: I bear no such witness. Say: He is only One Allah. Lo! I am innocent of that which ye associate (with Him).