وَإِذَا كَالُوهُمۡ أَو وَّزَنُوهُمۡ يُخۡسِرُونَ

Wa izaa kaaloohum aw wazanoohum yukhsiroon

But when they have to give by measure or weight to men, give less than due.

— Al-Mutaffifin (ٱلْمُطَفِّفِين), 83:3