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-Haqqah — Ayah 15
فَيَوۡمَئِذٖ وَقَعَتِ ٱلۡوَاقِعَةُ ١٥
﴾فَيَوْمَئِذٍوَقَعَتِٱلْوَاقِعَةُ﴿ «В тот день наступит Событие» — т.е. День Воскресения.