Surah At-Takathur 102:4
ثُمَّ كَلَّا سَوْفَ تَعْلَمُونَ
Then, no! You are going to know.
Translation: Saheeh International
Tafsir
Again no indeed! You will come to know the evil consequences of your mutual vainglory at the moment of the extraction of the soul then you will come to know in the grave.
Excerpt from Tafsir al-Jalalayn, commentary on 102:4, via Quran.com. The reader has the full commentary and 9 more tafsirs.