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 'Abasa — Ayah 3
وَمَا يُدۡرِيكَ لَعَلَّهُۥ يَزَّكَّىٰٓ ٣
O Messenger! What do you know, maybe this blind man may be purified of his sins?