Refutation of polytheism and shirk

أَفَأَصْفَىٰكُمْ رَبُّكُم بِٱلْبَنِينَ وَٱتَّخَذَ مِنَ ٱلْمَلَـٰٓئِكَةِ إِنَـٰثًا ۚ إِنَّكُمْ لَتَقُولُونَ قَوْلًا عَظِيمًا

Then, has your Lord chosen you for [having] sons and taken [i.e., adopted] from among the angels daughters? Indeed, you say a grave saying.

أَمَّن جَعَلَ ٱلْأَرْضَ قَرَارًا وَجَعَلَ خِلَـٰلَهَآ أَنْهَـٰرًا وَجَعَلَ لَهَا رَوَٰسِىَ وَجَعَلَ بَيْنَ ٱلْبَحْرَيْنِ حَاجِزًا ۗ أَءِلَـٰهٌ مَّعَ ٱللَّهِ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ

Is He [not best] who made the earth a stable ground and placed within it rivers and made for it firmly set mountains and placed between the two seas a barrier? Is there a deity with Allāh? [No], but most of them do not know.