fight against the leaders of the unbelievers if they violate their established peace treaty with you and revile your faith to force them to stop their aggression against you. you do not have to bind yourselves to such a treaty.
وإن نكثوا أيمانهم من بعد عهدهم وطعنوا في دينكم فقاتلوا أئمة الكفر إنهم لا أيمان لهم لعلهم ينتهون