Surah At-Tawbah — Verse 12

وَإِن نَّكَثُوٓا۟ أَيْمَٰنَهُم مِّنۢ بَعْدِ عَهْدِهِمْ وَطَعَنُوا۟ فِى دِينِكُمْ فَقَٰتِلُوٓا۟ أَئِمَّةَ ٱلْكُفْرِ ۙ إِنَّهُمْ لَآ أَيْمَٰنَ لَهُمْ لَعَلَّهُمْ يَنتَهُونَ

Wa in nakasooo aimaanahum mim ba'di 'ahdihim wa ta'anoo fee deenikum faqaatilooo a'immatal kufri innahum laaa aimaana lahum la'allahum yantahoon

And if they break their oaths after their treaty and defame your religion, then fight the leaders of disbelief, for indeed, there are no oaths [sacred] to them; [fight them that] they might cease.

All verses of Surah At-Tawbah