وَاذْكُرُوا إِذْ جَعَلَكُمْ خُلَفَاءَ مِن بَعْدِ عَادٍ وَبَوَّأَكُمْ فِي الْأَرْضِ تَتَّخِذُونَ مِن سُهُولِهَا قُصُورًا وَتَنْحِتُونَ الْجِبَالَ بُيُوتًا ۖ فَاذْكُرُوا آلَاءَ اللَّهِ وَلَا تَعْثَوْا فِي الْأَرْضِ مُفْسِدِينَ (74)
(7:74) And call to mind when He made you successors after 'Ad and gave you power in the earth so that you took for yourselves palaces in its plains and hewed out dwellings in the mountains. *59 Remember, then, the wondrous bounties of Allah and do not go about creating mischief in the land.' *60
*59). The Thamud were highly skilful in rock-carving, and made huge mansions by carving the mountains, as we have mentioned earlier (see n. 57 above). In this regard the works of the Thamud resemble the rock-carvings in the Ajanta and Ellora caves in India and several other places. A few buildings erected by the Thamud are still intact in Mada'in Salih and speak of their tremendous skills in civil engineering and architecture.
*60). The Qur'an asks people to draw a lesson from the tragic end of the 'Ad. For just as God destroyed that wicked people and established Muslims in positions of power and influence previously occupied by them, He can also destroy the Muslims and replace them by Others if they should become wicked and mischievous. (For further elaboration see n. 52 above.)