Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:9:12 –

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.  

But if they break, ˹if˺ they violate, their oaths, their covenants, after ˹making˺ their pact and assail your religion, slander it, then fight the leaders of unbelief, its heads (here an overt noun ˹‘the leaders of unbelief’˺ has replaced the ˹third person˺ pronominalisation) — verily they have no ˹binding˺ oaths, ˹no˺ pacts (a variant reading ˹for aymān, ‘oaths’˺ has the kasra inflection ˹for the alif, sc. īmān, ‘˹no˺ faith’˺) — so that they might desist, from unbelief.
القرآن:٩:١٢ –

وَإِنْ نَكَثُوا أَيْمَانَهُمْ مِنْ بَعْدِ عَهْدِهِمْ وَطَعَنُوا فِي دِينِكُمْ فَقَاتِلُوا أَئِمَّةَ الْكُفْرِ ۙ إِنَّهُمْ لَا أَيْمَانَ لَهُمْ لَعَلَّهُمْ يَنْتَهُونَ  

{وإن نكثوا} نقضوا {أيمانهم} مواثيقهم {من بعد عهدهم وطعنوا في دينكم} عابوه {فقاتلوا أئمة الكفر} رؤساءه، فيه وضع الظاهر موضع المضمر {إنهم لا أيمان} عهود {لهم} وفي قراءة بالكسر {لعلهم ينتهون} عن الكفر.