Surah Al-Kahf 18:4

وَيُنذِرَ ٱلَّذِينَ قَالُوا۟ ٱتَّخَذَ ٱللَّهُ وَلَدًا

And to warn those who say, "Allāh has taken a son".

Translation: Saheeh International

Tafsir

and to warn those from among the disbelievers who say ‘God has taken a son’.

Excerpt from Tafsir al-Jalalayn, commentary on 18:4, via Quran.com. The reader has the full commentary and 9 more tafsirs.