Read and reflect on verse 1557 from Surah Hud: AND UNTO [the people of] Madyan [We sent] their brother Shu'ayb. He said: "O my people! Worship God [alone]: you have no deity other than Him; and do ...
۞ وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا ۚ قَالَ يَا قَوْمِ اعْبُدُوا اللَّهَ مَا لَكُمْ مِنْ إِلَٰهٍ غَيْرُهُ ۖ وَلَا تَنْقُصُوا الْمِكْيَالَ وَالْمِيزَانَ ۚ إِنِّي أَرَاكُمْ بِخَيْرٍ وَإِنِّي أَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ مُحِيطٍ
AND UNTO [the people of] Madyan [We sent] their brother Shu'ayb. He said: "O my people! Worship God [alone]: you have no deity other than Him; and do not give short measure and weight [in any of your dealings with men]. Behold, I see you [now] in a happy state; but, verily, I dread lest suffering befall you on a Day that will encompass [you with doom]!