Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
Tafsir Ibne Kathir tafsir for Surah Al-Ahzab — Ayah 29
وَإِن كُنتُنَّ تُرِدۡنَ ٱللَّهَ وَرَسُولَهُۥ وَٱلدَّارَ ٱلۡأٓخِرَةَ فَإِنَّ ٱللَّهَ أَعَدَّ لِلۡمُحۡسِنَٰتِ مِنكُنَّ أَجۡرًا عَظِيمٗا ٢٩
Тафсир данного аята в предыдущем аяте