Shirk (polytheism and idolatry)

قُلْ أَىُّ شَىْءٍ أَكْبَرُ شَهَـٰدَةً ۖ قُلِ ٱللَّهُ ۖ شَهِيدٌۢ بَيْنِى وَبَيْنَكُمْ ۚ وَأُوحِىَ إِلَىَّ هَـٰذَا ٱلْقُرْءَانُ لِأُنذِرَكُم بِهِۦ وَمَنۢ بَلَغَ ۚ أَئِنَّكُمْ لَتَشْهَدُونَ أَنَّ مَعَ ٱللَّهِ ءَالِهَةً أُخْرَىٰ ۚ قُل لَّآ أَشْهَدُ ۚ قُلْ إِنَّمَا هُوَ إِلَـٰهٌ وَٰحِدٌ وَإِنَّنِى بَرِىٓءٌ مِّمَّا تُشْرِكُونَ

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. 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]."

وَقُلِ ٱلْحَمْدُ لِلَّهِ ٱلَّذِى لَمْ يَتَّخِذْ وَلَدًا وَلَمْ يَكُن لَّهُۥ شَرِيكٌ فِى ٱلْمُلْكِ وَلَمْ يَكُن لَّهُۥ وَلِىٌّ مِّنَ ٱلذُّلِّ ۖ وَكَبِّرْهُ تَكْبِيرًۢا

And say, "Praise to Allāh, who has not taken a son and has had no partner in [His] dominion and has no [need of a] protector out of weakness; and glorify Him with [great] glorification."

إِن كُلُّ مَن فِى ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ إِلَّآ ءَاتِى ٱلرَّحْمَـٰنِ عَبْدًا

There is no one in the heavens and earth but that he comes to the Most Merciful as a servant.

وَلَدَ ٱللَّهُ وَإِنَّهُمْ لَكَـٰذِبُونَ

"Allāh has begotten," and indeed, they are liars.

وَلَا تَجْعَلُوا۟ مَعَ ٱللَّهِ إِلَـٰهًا ءَاخَرَ ۖ إِنِّى لَكُم مِّنْهُ نَذِيرٌ مُّبِينٌ

And do not make [as equal] with Allāh another deity. Indeed, I am to you from Him a clear warner.