Surah An-Nazi'at 79:35

يَوْمَ يَتَذَكَّرُ ٱلْإِنسَـٰنُ مَا سَعَىٰ

The Day when man will remember that for which he strove,

Translation: Saheeh International

Tafsir

the day when man will remember yawma yatadhakkaru’l-insānu substitutes for idhā ‘when’ his efforts in the life of the world in the way of good or evil

Excerpt from Tafsir al-Jalalayn, commentary on 79:35, via Quran.com. The reader has the full commentary and 9 more tafsirs.