Dalil
العربية

Quran Ar-Rahman 55:9

وَأَقِيمُواْ ٱلۡوَزۡنَ بِٱلۡقِسۡطِ وَلَا تُخۡسِرُواْ ٱلۡمِيزَانَ

Translation

And establish weight in justice and do not make deficient the balance.