Al-Mutaffifin • AR-TAFSIR-IBN-KATHIR
﴿ وَإِذَا رَأَوْهُمْ قَالُوٓا۟ إِنَّ هَٰٓؤُلَآءِ لَضَآلُّونَ ﴾
“and whenever they see those [who believe,] they say, "Behold, these [people] have indeed gone astray!"”
أي لكونهم على غير دينهم.