Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
English Al-Mukhtasar tafsir for Surah Al-Qamar — Ayah 15
وَلَقَد تَّرَكۡنَٰهَآ ءَايَةٗ فَهَلۡ مِن مُّدَّكِرٖ ١٥
I have left this punishment that I meted out to them as a lesson and admonition. Is there anyone to take a lesson from that?