Al-An‘âm 6:19
قُلْ أَيُّ شَيْءٍ أَكْبَرُ شَهَادَةً ۖ قُلِ اللَّهُ ۖ شَهِيدٌ بَيْنِي وَبَيْنَكُمْ ۚ وَأُوحِيَ إِلَيَّ هَٰذَا الْقُرْآنُ لِأُنذِرَكُم بِهِ وَمَن بَلَغَ ۚ أَئِنَّكُمْ لَتَشْهَدُونَ أَنَّ مَعَ اللَّهِ آلِهَةً أُخْرَىٰ ۚ قُل لَّا أَشْهَدُ ۚ قُلْ إِنَّمَا هُوَ إِلَٰهٌ وَاحِدٌ وَإِنَّنِي بَرِيءٌ مِّمَّا تُشْرِكُونَ ١٩
Qul ayyu shayin akbaru shahadatan quli Allahu shaheedun baynee wabaynakum waoohiya ilayya hatha alquranu lionthirakum bihi waman balagha ainnakum latashhadoona anna maAAa Allahi alihatan okhra qul la ashhadu qul innama huwa ilahun wahidun wainnanee bareeon mimma tushrikoona
“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 God. Lo! I am innocent of that which ye associate (with Him).” (6:19)