Surah Al-Isra 17:35

وَأَوْفُوا۟ ٱلْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا۟ بِٱلْقِسْطَاسِ ٱلْمُسْتَقِيمِ ۚ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا

And give full measure when you measure, and weigh with an even [i.e., honest] balance. That is the best [way] and best in result.

Translation: Saheeh International

Tafsir

And give full measure complete it when you measure and weigh with a right balance with an even balance that is better and fairer in return.

Excerpt from Tafsir al-Jalalayn, commentary on 17:35, via Quran.com. The reader has the full commentary and 9 more tafsirs.