Tests and Trials (Fitna) as Means of Purification

وَلَيَعْلَمَنَّ ٱللَّهُ ٱلَّذِينَ ءَامَنُوا۟ وَلَيَعْلَمَنَّ ٱلْمُنَـٰفِقِينَ

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