وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا فَقَالَ يَا قَوْمِ اعْبُدُوا اللَّهَ وَارْجُوا الْيَوْمَ الْآخِرَ وَلَا تَعْثَوْا فِي الْأَرْضِ مُفْسِدِينَ (36)
(29:36) And We sent to Midian their brother Shuayb. *61 He said: 'My people, serve Allah and look forward to the Last Day *62 and do not go about the earth committing mischief.'
*61) For comparison, see AI-'raf: 85-93, Hud: 84-96, Ash-Shu araa: 177
*62) This can have two meanings: (1) "Look forward to the life hereafter, and do not think that there is no life after this worldly life, when you will have to render an account of your deeds and be rewarded or punished accordingly." (2) "Work righteously so as to meet a good end in the Hereafter."