Quran 29:35 — The Spider (Al-'Ankaboot)

We left standing some of their ruins, to serve as a profound lesson for people who understand.

[29:34] "We will pour upon the people of this town a disaster from the sky, as a consequence of their wickedness."

[29:36] To Midyan we sent their brother Shu‘aib. He said, "O my people, you shall worship GOD and seek the Last Day, and do not roam the earth corruptingly."