Surah Qaf 50:42

يَوْمَ يَسْمَعُونَ ٱلصَّيْحَةَ بِٱلْحَقِّ ۚ ذَٰلِكَ يَوْمُ ٱلْخُرُوجِ

The Day they will hear the blast [of the Horn] in truth. That is the Day of Emergence [from the graves].

Translation: Saheeh International

Tafsir

On the day yawma substitutes for the previous yawma when they that is all creatures hear the Call of truth of the Resurrection — this will be Isrāfīl’s second blast and it may precede or follow his initial call — that day of the call and the hearing is the day of coming forth from the graves yawma ‘on the day is in …

Excerpt from Tafsir al-Jalalayn, commentary on 50:42, via Quran.com. The reader has the full commentary and 9 more tafsirs.