And We made the highest part [of the city] its lowest and rained upon them stones of hard clay.
The Saheeh International Quran Translation
فَجَعَلْنَا عَٰلِيَهَا سَافِلَهَا وَأَمْطَرْنَا عَلَيْهِمْ حِجَارَةً مِّن سِجِّيلٍAnd We made the highest part [of the city] its lowest and rained upon them stones of hard clay.