3:141
وَلِيُمَحِّصَ ٱللَّهُ ٱلَّذِينَ ءَامَنُوا۟ وَيَمْحَقَ ٱلْكَـٰفِرِينَ
waliyumaḥḥiṣa l-lahu alladhīna āmanū wayamḥaqa l-kāfirīna
for Him to cleanse those who believe and for Him to destroy the disbelievers.
And that Allâh may test (or purify) the believers (from sins) and destroy the disbelievers.