Surat At-Tawbah - سورة التوبة

وَإِن نَّكَثُوا أَيْمَانَهُم مِّن بَعْدِ عَهْدِهِمْ وَطَعَنُوا فِي دِينِكُمْ فَقَاتِلُوا أَئِمَّةَ الْكُفْرِ ۙ إِنَّهُمْ لَا أَيْمَانَ لَهُمْ لَعَلَّهُمْ يَنتَهُونَ

Muhsin Khan: But if they violate their oaths after their covenant, and attack your religion with disapproval and criticism then fight (you) the leaders of disbelief (chiefs of Quraish - pagans of Makkah) - for surely their oaths are nothing to them - so that they may stop (evil actions).