وَأَوۡفُواْ ٱلۡكَيۡلَ إِذَا كِلۡتُمۡ وَزِنُواْ بِٱلۡقِسۡطَاسِ ٱلۡمُسۡتَقِيمِۚ ذَٰلِكَ خَيۡرٞ وَأَحۡسَنُ تَأۡوِيلٗا
Wa laa taqraboo maalal yateemi illaa billatee hiya ahsanu hattaa yablugha ashuddah; wa awfoo bil'ahd, innal 'ahda kaana mas'oolaa
Give full measure when ye measure, and weigh with a balance that is straight: that is the most fitting and the most advantageous in the final determination.
— Al-Isra' (ٱلْإِسْرَاء), 17:35
