Verse 66

قَالَ ٱلْمَلَأُ ٱلَّذِينَ كَفَرُوا۟ مِن قَوْمِهِۦٓ إِنَّا لَنَرَىٰكَ فِى سَفَاهَةٍ وَإِنَّا لَنَظُنُّكَ مِنَ ٱلْكَـٰذِبِينَ

A group amongst his people who rejected faith said; we most certainly see that you are a fool and indeed we think that you are a liar.