At-Tawbah 9:12

وَإِن نَّكَثُوٓا۟ أَيْمَـٰنَهُم مِّنۢ بَعْدِ عَهْدِهِمْ وَطَعَنُوا۟ فِى دِينِكُمْ فَقَـٰتِلُوٓا۟ أَئِمَّةَ ٱلْكُفْرِ ۙ إِنَّهُمْ لَآ أَيْمَـٰنَ لَهُمْ لَعَلَّهُمْ يَنتَهُونَ

Wa-in nakathū aymānahum min baʿdi ʿahdihim waṭaʿanū fī dīnikum faqātilū a-immata l-kuf'ri innahum lā aymāna lahum laʿallahum yantahūna

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