وَأَوْفُوا ٱلْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا بِٱلْقِسْطَاسِ ٱلْمُسْتَقِيمِ ۚ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا

Waawfoo alkayla itha kiltum wazinoobilqistasi almustaqeemi thalika khayrun waahsanuta/weela

And give full measure when you measure, and weigh with an even [i.e., honest] balance. That is the best [way] and best in result.