وَإِذَا كَالُوهُمْ أَو وَّزَنُوهُمْ يُخْسِرُونَ
[83:3]
But when they measure out to others or weigh out for them, they are deficient.
But when they have to give by measure or weight to men, give less than due.
But if they measure unto them or weight for them, they cause them loss.