Quran 17:35 from Surah Al-Israa on Divine Marvels.
وَأَوۡفُواْ ٱلۡكَيۡلَ إِذَا كِلۡتُمۡ وَزِنُواْ بِٱلۡقِسۡطَاسِ ٱلۡمُسۡتَقِيمِۚ ذَٰلِكَ خَيۡرٞ وَأَحۡسَنُ تَأۡوِيلٗا
English translation: And give full [the] measure when you measure and weigh with the balance the straight That (is) good and best (in) result
Transliteration: wa-awfu al-kayla idha kil'tum wazinu bil-qis'tasi al-mus'taqimi dhalika khayrun wa-ahsanu tawilan