سُورَةُ الإِسۡرَاءِ
Al-Israa·17:35
وَأَوْفُوا الْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا بِالْقِسْطَاسِ الْمُسْتَقِيمِ ۚ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا٣٥
And give full measure whenever you measure, and weigh with a balance that is true: this will be [for your own] good, and best in the end.