"And establish weight in justice," meaning: with fairness. "And do not cause loss in the balance," meaning: do not cheat people [of their due].
﴿وَأقِيمُوا الْوَزْن بِالْقِسْطِ﴾ بِالْعَدْلِ ﴿وَلَا تخسروا الْمِيزَان﴾ أَي: لَا تنقصوا النَّاس.
