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:8:56 –

The ones with whom you made a treaty but then they break their pledge every time, and they do not fear Allah.  

those of them with whom you have made a pact, not to support the idolaters, and then break their pact every time, they conclude one, and they are not fearful, of God, in their treachery.
القرآن:٨:٥٦ –

الَّذِينَ عَاهَدْتَ مِنْهُمْ ثُمَّ يَنْقُضُونَ عَهْدَهُمْ فِي كُلِّ مَرَّةٍ وَهُمْ لَا يَتَّقُونَ  

{الذين عاهدت منهم} ألا يعينوا المشركين {ثم ينقضون عهدهم في كل مرة} عاهدوا فيها {وهم لا يتقون} الله في غدرهم.