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 Ad-Dukhan — Ayah 2
وَٱلۡكِتَٰبِ ٱلۡمُبِينِ ٢
Allah bersumpah dengan Al-Qur`ān yang menjelaskan jalan petunjuk menuju kebenaran.