Aal-i-Imraan • BN-TAFSEER-IBN-E-KASEER
﴿ وَلِيُمَحِّصَ ٱللَّهُ ٱلَّذِينَ ءَامَنُوا۟ وَيَمْحَقَ ٱلْكَٰفِرِينَ ﴾
“and that God might render pure of all dross those who have attained to faith, and bring to nought those who deny the truth.”
Please check ayah 3:143 for complete tafsir.