Sura 26 Ash-Shu'ara' (The Poets), aya 181

1. أَوْفُوا الْكَيْلَ وَلَا تَكُونُوا مِنَ الْمُخْسِرِينَ

   Give full measure and do not be of those who cause loss.

   26:181

Tafsiri: Saheeh International