Surah Yunus 10:36

وَمَا يَتَّبِعُ أَكْثَرُهُمْ إِلَّا ظَنًّا ۚ إِنَّ ٱلظَّنَّ لَا يُغْنِى مِنَ ٱلْحَقِّ شَيْـًٔا ۚ إِنَّ ٱللَّهَ عَلِيمٌۢ بِمَا يَفْعَلُونَ

And most of them follow not except assumption. Indeed, assumption avails not against the truth at all. Indeed, Allāh is Knowing of what they do.

Translation: Saheeh International

Tafsir

And most of them in worshipping idols follow nothing but conjecture since they imitate their fathers therein; truly conjecture avails nothing against truth when what is sought is knowledge. Surely God is Knower of what they do and will requite them for it.

Excerpt from Tafsir al-Jalalayn, commentary on 10:36, via Quran.com. The reader has the full commentary and 9 more tafsirs.