Surah Qaf 50:19

وَجَآءَتْ سَكْرَةُ ٱلْمَوْتِ بِٱلْحَقِّ ۖ ذَٰلِكَ مَا كُنتَ مِنْهُ تَحِيدُ

And the intoxication of death will bring the truth; that is what you were trying to avoid.

Translation: Saheeh International

Tafsir

And the agony of death its throes and distress arrives with the truth of the Hereafter such that the one who denied it sees it with his own eyes — and this is the distress itself. That namely death is what you used to shun what you used to flee from and be terrified by.

Excerpt from Tafsir al-Jalalayn, commentary on 50:19, via Quran.com. The reader has the full commentary and 9 more tafsirs.