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:3:100 –

O you who have believed, if you obey a party of those who were given the Scripture, they would turn you back, after your belief, ˹to being˺ unbelievers.  

The following was revealed when the Jews passed by the Aws and the Khazraj and were infuriated by their comradeship, and set about reminding them of their mutual hostility in the days before Islam, such that they caused them to quarrel and the two ˹tribes˺ were on the verge of fighting one another: O you who believe, if you obey a party of those who have been given the Scripture, they will turn you, after you have believed, into disbelievers.
القرآن:٣:١٠٠ –

يَا أَيُّهَا الَّذِينَ آمَنُوا إِنْ تُطِيعُوا فَرِيقًا مِنَ الَّذِينَ أُوتُوا الْكِتَابَ يَرُدُّوكُمْ بَعْدَ إِيمَانِكُمْ كَافِرِينَ  

ونزل لما مر بعض اليهود على الأوس والخزرج وغاظهم تألفهم فذكروهم بما كان بينهم في الجاهلية من الفتن فتشاجروا وكادوا يقتتلون: {يا أيها الذين آمنوا إن تطيعوا فريقا من الذين أوتوا الكتاب يردوكم بعد إيمانكم كافرين}.