Al-Ma'idah' - 5:34

إِلاَّ الَّذِينَ تَابُواْ مِن قَبْلِ أَن تَقْدِرُواْ عَلَيْهِمْ فَاعْلَمُواْ أَنَّ اللّهَ غَفُورٌ رَّحِيمٌ
[5:34]
Except those who repent before you have them in your power; so know that Allah is Forgiving, Merciful.
Except for those who repent before they fall into your power: in that case, know that Allah is Oft-forgiving, Most Merciful.
Save those who repent before ye overpower them. For know that Allah is Forgiving, Merciful.