Surah Al-'Ankabut 29:11

وَلَيَعْلَمَنَّ ٱللَّهُ ٱلَّذِينَ ءَامَنُوا۟ وَلَيَعْلَمَنَّ ٱلْمُنَـٰفِقِينَ

And Allāh will surely make evident those who believe, and He will surely make evident the hypocrites.

Translation: Saheeh International

Tafsir

And God shall surely ascertain those who believe in their hearts and He shall surely ascertain the hypocrites and He will requite each group accordingly the lām in both verbs la-ya‘lamanna ‘He shall ascertain’ is for oaths.

Excerpt from Tafsir al-Jalalayn, commentary on 29:11, via Quran.com. The reader has the full commentary and 9 more tafsirs.