﴿ قَالُوا۟ ٱتَّخَذَ ٱللَّهُ وَلَدًۭا ۗ سُبْحَٰنَهُۥ ۖ هُوَ ٱلْغَنِىُّ ۖ لَهُۥ مَا فِى ٱلسَّمَٰوَٰتِ وَمَا فِى ٱلْأَرْضِ ۚ إِنْ عِندَكُم مِّن سُلْطَٰنٍۭ بِهَٰذَآ ۚ أَتَقُولُونَ عَلَى ٱللَّهِ مَا لَا تَعْلَمُونَ ﴾

“[And yet] they assert, "God has taken unto Himself a son!" Limitless is He in His glory! Self-sufficient is He: unto Him belongs all that is in the heavens and all that is on earth! No evidence whatever have you for this [assertion]! Would you ascribe unto God something which you cannot know?”

Please check ayah 10:70 for complete tafsir.