Abbas - Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs
(But they denied him) they rejected his message, (and the dreadful earthquake took them) as a punishment, (and morning found them prostrate in their dwelling-place) and morning found them dead in their compound, without any movement.
Allah tells us that His servant and Messenger Shu`ayb, peace be upon him, warned his people, the people of Madyan, and commanded them to worship Allah Alone with no partner or associate, and to fear the wrath and punishment of Allah on the Day of Resurrection. He said:
(for those who look forward to (meeting with) Allah and the Last Day) (60:6).
وَلاَ تَعْثَوْاْ فِى الاٌّرْضِ مُفْسِدِينَ
(and commit no mischief on the earth as mischief-makers.) This is forbidding them to make mischief on earth by spreading corruption, which means going around doing evil to people. They used to cheat in weights and measures, and ambush people on the road; this is in addition to their disbelief in Allah and His Messenger. So Allah destroyed them with a mighty earthquake that convulsed their land, and the Sayhah (shout) which tore their hearts from their bodies, and the torment of the Day of Shade, when their souls were taken. This was the torment of a great day. We have already examined their story in detail in Surat Al-A`raf, Surat Hud and Surat Ash-Shu`ara'.
فَأَصْبَحُواْ فِي دَارِهِمْ جَـثِمِينَ
(and they lay, prostrate in their dwellings.) Qatadah said, "They were dead.'' Others said that they were thrown on top of one another.
Maududi - Sayyid Abul Ala Maududi - Tafhim al-Qur'an
For comparison, see AI-'raf: 85-93, Hud: 84-96, Ash-Shu araa: 177
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."
That is, "They did not believe that the Prophet Shu`aib was a Messenger of Allah and the teachings he gave were from Allah and that if they rejected him they would be punished by a torment from Allah.
"Dwelling-places": the whole area and country inhabited by those