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 Al-Fajr — Ayah 12
فَأَكۡثَرُواْ فِيهَا ٱلۡفَسَادَ ١٢
Lalu mereka berbuat banyak kerusakan di negeri-negeri mereka karena kekufuran dan kemaksiatan yang mereka sebarkan.