Surah Al-Mutaffifin 83:32
وَإِذَا رَأَوْهُمْ قَالُوٓا۟ إِنَّ هَـٰٓؤُلَآءِ لَضَآلُّونَ
And when they saw them, they would say, "Indeed, those are truly lost."
Translation: Saheeh International
Tafsir
and when they see them that is the believers they say ‘Lo! these men are astray!’ on account of their belief in Muhammad (s).
Excerpt from Tafsir al-Jalalayn, commentary on 83:32, via Quran.com. The reader has the full commentary and 9 more tafsirs.