﴿ فَجَعَلْنَا عَٰلِيَهَا سَافِلَهَا وَأَمْطَرْنَا عَلَيْهِمْ حِجَارَةًۭ مِّن سِجِّيلٍ ﴾

“and We turned those [sinful towns} upside down, and rained down upon them stone-hard blows of chastisement pre-ordained.”

Please check ayah 15:77 for complete tafsir.