Quraan
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
Remember, We sent to Midian their brother Shu'aib. "O you people," he said, "worship God, for you have no other god but He. Clear proof has come to you from your Lord; so give in full measure and full weight; do not keep back from people what is theirs, and do not corrupt the land after it has been reformed. This is best for you if you believe.

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