Surah At-Tariq 86:9

يَوْمَ تُبْلَى ٱلسَّرَآئِرُ

The Day when secrets will be put on trial,

Translation: Saheeh International

Tafsir

on the day when all secrets the hidden convictions and intentions of the hearts are inspected when they are examined and revealed

Excerpt from Tafsir al-Jalalayn, commentary on 86:9, via Quran.com. The reader has the full commentary and 9 more tafsirs.