Qur'an 29:3

وَلَقَدْ فَتَنَّا ٱلَّذِينَ مِن قَبْلِهِمْ ۖ فَلَيَعْلَمَنَّ ٱللَّهُ ٱلَّذِينَ صَدَقُوا۟ وَلَيَعْلَمَنَّ ٱلْكَـٰذِبِينَ

“But We have certainly tried those before them, and Allāh will surely make evident those who are truthful, and He will surely make evident the liars.”

Al-Ankaboot 29:3 · Saheeh International