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 Al-Qalam — Ayah 15
إِذَا تُتۡلَىٰ عَلَيۡهِ ءَايَٰتُنَا قَالَ أَسَٰطِيرُ ٱلۡأَوَّلِينَ ١٥
Когда ему читают Наши аяты, он говорит: «Сказки древних народов!»