سورة الأعراف
وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا ۗ قَالَ يَا قَوْمِ اعْبُدُوا اللَّهَ مَا لَكُمْ مِنْ إِلَٰهٍ غَيْرُهُ ۖ قَدْ جَاءَتْكُمْ بَيِّنَةٌ مِنْ رَبِّكُمْ ۖ فَأَوْفُوا الْكَيْلَ وَالْمِيزَانَ وَلَا تَبْخَسُوا النَّاسَ أَشْيَاءَهُمْ وَلَا تُفْسِدُوا فِي الْأَرْضِ بَعْدَ إِصْلَاحِهَا ۚ ذَٰلِكُمْ خَيْرٌ لَكُمْ إِنْ كُنْتُمْ مُؤْمِنِينَ ﴿٨٥﴾
Surah al-A'raf
85. And to Median, their brother Shuaib. He said, “O my people! worship Allah! You have no god other than Him. Clear evidence has come to you from your Lord. Give full measure and weight, and do not cheat people out of their rights, and do not corrupt the land after its reformation. That is better for you—if you are believers.”