Quran 83:32 — The Cheaters (Al-Mutaffifeen)

وَإِذا رَأَوهُم قالوا إِنَّ هٰؤُلاءِ لَضالّونَ

Whenever they saw them, they said, "These people are far astray!

[83:31] When they got together with their people, they used to joke.

[83:33] "They have no such thing as (invisible) guards."