Yusuf Ali
But if they turn back, Allah hath full knowledge of those who do mischief.

Sahih International
But if they turn away, then indeed - Allah is Knowing of the corrupters.

Shakir
But if they turn back, then surely Allah knows the mischief-makers.

Pickthall
And if they turn away, then lo! Allah is Aware of (who are) the corrupters.

محمد جالندھری
تو اگر یہ لوگ پھر جائیں تو خدا مفسدوں کو خوب جانتا ہے