Chapter 11, Verse 85, Hud
سورة هود
وَيَٰقَوۡمِ أَوۡفُواْ ٱلۡمِكۡيَالَ وَٱلۡمِيزَانَ بِٱلۡقِسۡطِۖ وَلَا تَبۡخَسُواْ ٱلنَّاسَ أَشۡيَآءَهُمۡ وَلَا تَعۡثَوۡاْ فِي ٱلۡأَرۡضِ مُفۡسِدِينَ
"and O my people! give full measure and weight in justice and reduce not the things that are due to the people, and do not commit mischief in the land, causing corruption.
Chapter 17, Verse 35, The night journey
سورة الإسراء
وَأَوۡفُواْ ٱلۡكَيۡلَ إِذَا كِلۡتُمۡ وَزِنُواْ بِٱلۡقِسۡطَاسِ ٱلۡمُسۡتَقِيمِۚ ذَٰلِكَ خَيۡرٞ وَأَحۡسَنُ تَأۡوِيلٗا
and give full measure when you measure, and weigh with a balance that is straight. That is good (advantageous) and better in the end.
Chapter 26, Verse 181, The Poets
سورة الشعراء
۞أَوۡفُواْ ٱلۡكَيۡلَ وَلَا تَكُونُواْ مِنَ ٱلۡمُخۡسِرِينَ
"give full measure, and cause no loss (to others).
Chapter 83, Verse 1, Defrauding
سورة المطففين
وَيۡلٞ لِّلۡمُطَفِّفِينَ
Woe to Al-Mutaffifin [those who give less in measure and weight (decrease the rights of others)],
Chapter 83, Verse 3, Defrauding
سورة المطففين
وَإِذَا كَالُوهُمۡ أَو وَّزَنُوهُمۡ يُخۡسِرُونَ
and when they have to give by measure or weight to men, give less than due.