Prophetic mission and monotheism

وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا فَقَالَ يَـٰقَوْمِ ٱعْبُدُوا۟ ٱللَّهَ وَٱرْجُوا۟ ٱلْيَوْمَ ٱلْـَٔاخِرَ وَلَا تَعْثَوْا۟ فِى ٱلْأَرْضِ مُفْسِدِينَ

And to Madyan [We sent] their brother Shuʿayb, and he said, "O my people, worship Allāh and expect the Last Day and do not commit abuse on the earth, spreading corruption."