Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Tafseer Al Saadi - Arabic tafsir for Surah Al-Ma'arij — Ayah 28
إِنَّ عَذَابَ رَبِّهِمۡ غَيۡرُ مَأۡمُونٖ ٢٨
{ إِنَّ عَذَابَ رَبِّهِمْ غَيْرُ مَأْمُونٍ } أي: هو العذاب الذي يخشى ويحذر.