Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Italian Al-Mukhtasar in interpreting the Noble Quran tafsir for Surah At-Takwir — Ayah 17
وَٱلَّيۡلِ إِذَا عَسۡعَسَ ١٧
E giurò sull'arrivo della notte e sul suo termine, quando svanisce.