Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Tafsir Jalalayn tafsir for Surah Ash-Shams — Ayah 1
وَٱلشَّمۡسِ وَضُحَىٰهَا ١
(Demi matahari dan cahayanya di pagi hari) yaitu sewaktu memancarkan sinarnya di pagi hari.