Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Turkish Al-Mukhtasar in Interpreting the Noble Quran tafsir for Surah Al-Fajr — Ayah 12
فَأَكۡثَرُواْ فِيهَا ٱلۡفَسَادَ ١٢
Yaydıkları küfür ve günahlarla oralarda fesadı arttırdılar.