Surah At-Tawbah 9:66

لَا تَعْتَذِرُوا۟ قَدْ كَفَرْتُم بَعْدَ إِيمَـٰنِكُمْ ۚ إِن نَّعْفُ عَن طَآئِفَةٍ مِّنكُمْ نُعَذِّبْ طَآئِفَةًۢ بِأَنَّهُمْ كَانُوا۟ مُجْرِمِينَ

Make no excuse; you have disbelieved [i.e., rejected faith] after your belief. If We pardon one faction of you - We will punish another faction because they were criminals.

Translation: Saheeh International

Tafsir

Make no excuses for that. You have disbelieved after believing that is your disbelief has become manifest even as you have manifested belief. If We forgive read passive yu‘fa ‘it is forgiven’ or active first person plural na‘fu ‘We forgive’ a party of you because of its sincerity and its repentance as in the case of …

Excerpt from Tafsir al-Jalalayn, commentary on 9:66, via Quran.com. The reader has the full commentary and 9 more tafsirs.