Quran 7:85 from Surah Al-A'raaf on Divine Marvels.
وَإِلَىٰ مَدۡيَنَ أَخَاهُمۡ شُعَيۡبٗاۚ قَالَ يَٰقَوۡمِ ٱعۡبُدُواْ ٱللَّهَ مَا لَكُم مِّنۡ إِلَٰهٍ غَيۡرُهُۥۖ قَدۡ جَآءَتۡكُم بَيِّنَةٞ مِّن رَّبِّكُمۡۖ فَأَوۡفُواْ ٱلۡكَيۡلَ وَٱلۡمِيزَانَ وَلَا تَبۡخَسُواْ ٱلنَّاسَ أَشۡيَآءَهُمۡ وَلَا تُفۡسِدُواْ فِي ٱلۡأَرۡضِ بَعۡدَ إِصۡلَٰحِهَاۚ ذَٰلِكُمۡ خَيۡرٞ لَّكُمۡ إِن كُنتُم مُّؤۡمِنِينَ
English translation: And to Madyan his brother Shuaib He said O my people! Worship Allah not for you any god other than Him Verily has came to you a clear proof from your Lord So give full [the] measure and the weight and (do) not deprive [the] people in their things and (do) not cause corruption in the earth after its reformation That (is) better for you if you are believers
Transliteration: wa-ila madyana akhahum shu'ayban qala yaqawmi u'budu al-laha ma lakum min ilahin ghayruhu qad jaatkum bayyinatun min rabbikum fa-awfu al-kayla wal-mizana wala tabkhasu al-nasa ashyaahum wala tuf'sidu fi al-ardi ba'da is'lahiha dhalikum khayrun lakum in kuntum mu'minina