Surah Ah-Shu'ara' (The Poets), Verse 181

اَوْفُوا الْكَیْلَ وَلَا تَكُوْنُوْا مِنَ الْمُخْسِرِیْنَ ۟

Awful kaila wa laa takoonoo minal mukhsireen

“"Give just measure, and cause no loss (to others by fraud).”

Quran 26:181 (Yusuf Ali Translation)