Quran 55:9 from Surah Ar-Rahmaan on Divine Marvels.
وَأَقِيمُواْ ٱلۡوَزۡنَ بِٱلۡقِسۡطِ وَلَا تُخۡسِرُواْ ٱلۡمِيزَانَ
English translation: And establish the weight in justice and (do) not make deficient the balance
Transliteration: wa-aqimu al-wazna bil-qis'ti wala tukh'siru al-mizana