Al-Israa • EN-TAFSIR-IBN-ABBAS
﴿ وَأَوْفُوا۟ ٱلْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا۟ بِٱلْقِسْطَاسِ ٱلْمُسْتَقِيمِ ۚ ذَٰلِكَ خَيْرٌۭ وَأَحْسَنُ تَأْوِيلًۭا ﴾
“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.”
(Fill the measure) perfect measurement (when ye measure) to others, (and weigh with a right balance) with a fair balance; (that) perfecting measurement and weighing and fulfilling one's pledge (is meet) is better than breaking covenants and cheating in measure, (and better in the end) in the end result.