Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Indoniesua Al-Mukhtasar in Interpreting the Noble Quran tafsir for Surah Adh-Dhariyat — Ayah 17
كَانُواْ قَلِيلٗا مِّنَ ٱلَّيۡلِ مَا يَهۡجَعُونَ ١٧
Mereka dahulu salat di malam hari, tidak tidur kecuali hanya sebentar saja.