Surah At-Tawbah, Verse 66

لَا تَعۡتَذِرُواْ قَدۡ كَفَرۡتُم بَعۡدَ إِيمَٰنِكُمۡۚ إِن نَّعۡفُ عَن طَآئِفَةٖ مِّنكُمۡ نُعَذِّبۡ طَآئِفَةَۢ بِأَنَّهُمۡ كَانُواْ مُجۡرِمِينَ٦٦

lā taʿtadhirū qad kafartum baʿda īmānikum in naʿfu ʿan ṭāifatin minkum nuʿadhib ṭāifatan bi-annahum kānū muj'rimīna

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.