سورة الأَحۡزَابِ — الآية ٨
لِّيَسْـَٔلَ ٱلصَّٰدِقِينَ عَن صِدْقِهِمْ ۚ وَأَعَدَّ لِلْكَٰفِرِينَ عَذَابًا أَلِيمًۭا ٨
That He may question the truthful about their truth. And He has prepared for the disbelievers a painful punishment. (Saheeh International)