Commentary explaining the meaning of the ayahs. One passage often covers several ayahs, so neighbouring ayahs can show the same text.
English Al-Mukhtasar tafsir for Surah Al-Ma'arij — Ayah 4
تَعۡرُجُ ٱلۡمَلَٰٓئِكَةُ وَٱلرُّوحُ إِلَيۡهِ فِي يَوۡمٖ كَانَ مِقۡدَارُهُۥ خَمۡسِينَ أَلۡفَ سَنَةٖ ٤
The angels and Gabriel will ascend in them ranks on the Day of Judgement: it is a day of which the duration is fifty thousand years.