5:34
إِلَّا ٱلَّذِينَ تَابُوا۟ مِن قَبْلِ أَن تَقْدِرُوا۟ عَلَيْهِمْ ۖ فَٱعْلَمُوٓا۟ أَنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ
illā alladhīna tābū min qabli an taqdirū ʿalayhim fa-iʿ'lamū anna l-laha ghafūrun raḥīmun
unless they repent before you overpower them- in that case bear in mind that God is forgiving and merciful.
Except for those who (having fled away and then) came back (as Muslims) with repentance before they fall into your power; in that case, know that Allâh is Oft-Forgiving, Most Merciful.