فَإِن تَوَلَّوْاْ فَإِنَّ اللّهَ عَلِيمٌ بِالْمُفْسِدِينَ
[3:63]
But if they turn back, then surely Allah knows the mischief-makers.
But if they turn back, Allah hath full knowledge of those who do mischief.
And if they turn away, then lo! Allah is Aware of (who are) the corrupters.