وَاَوْفُوا الْكَيْلَ اِذَا كِلْتُمْ وَزِنُوْا بِالْقِسْطَاسِ الْمُسْتَقِيْمِۗ ذٰلِكَ خَيْرٌ وَّاَحْسَنُ تَأْوِيْلًا ( الإسراء: ٣٥ )
Wa awful kaila izaa kiltum wa zinoo bilqistaasil mustaqeem; zaalika khairunw wa ahsanu taaweelaa (al-ʾIsrāʾ 17:35)
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. (Al-Isra  : 35)
1 Mufti Taqi Usmani
And give full measure when you measure, and weigh with a straight balance. That is fair, and better at the end.