Quran 83:3 from Surah Al-Mutaffifin on Divine Marvels.
وَإِذَا كَالُوهُمۡ أَو وَّزَنُوهُمۡ يُخۡسِرُونَ
English translation: But when they give by measure (to) them or they weigh (for) them they give less
Transliteration: wa-idha kaluhum aw wazanuhum yukh'siruna