The Holy Quran 17:35 — Surah Al-Isra
Arabic text
وَأَوْفُوا۟ ٱلْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا۟ بِٱلْقِسْطَاسِ ٱلْمُسْتَقِيمِ ۚ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا
Translation
Measure in full when you measure (goods for people) and weigh with proper scales (so that others are not cheated). This is best and better in the final outcome (because it leads to mutual trust and rules out disputes).
Tafsir (excerpt) — Tafsir Usmani
Short measure and weight: that is, do not give short weight. Cheating in measure and weight disrupts the order of dealings among people. The story of the destruction of the people of Shu'ayb ﵇ has already come in many places; their principal sin in practice is stated to be precisely this.
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