Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Tafsir Ibne Kathir tafsir for Surah Adh-Dhariyat — Ayah 33
لِنُرۡسِلَ عَلَيۡهِمۡ حِجَارَةٗ مِّن طِينٖ ٣٣
( لِنـُرْسِلَ عَلَيْهِمْ حِجَارَةً مّن طِينٍ ) «чтобы наслать на них каменья из глины,