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:3:61 –

Then whoever argues with you about it after ˹this˺ knowledge has come to you - say, "Come, let us call our sons and your sons, our women and your women, ourselves and yourselves, then supplicate earnestly ˹together˺ and invoke the curse of Allah upon the liars ˹among us˺."  

And whoever, from among the Christians, disputes with you concerning him, after the knowledge, of his affair, that has come to you, say, to them: ‘Come! Let us call our sons and your sons, our wives and your wives, our selves and your selves, and gather them together, then let us humbly pray and invoke God’s curse upon those who lie’, by saying: ‘Lord, curse the one that tells lies concerning the affair of Jesus’. The Prophet (s) had called upon the Najrān delegation to do this when they disputed with him about Jesus. They said, ‘Let us think about it and we will come back to you’. The judicious one among them said, ‘You know that he is a prophet, and that every people that has ever challenged a prophet to a mutual imprecation has been destroyed’. They left him and departed. When they went to see the Prophet (s), who had set out with al-Hasan, al-Husayn, Fātima and ‘Alī, he said to them ˹the Najrān delegation˺, ‘When I supplicate, you say ‘Amen’; but they refrained from this mutual imprecation and made peace with the Prophet on the condition that they pay the jizya, as reported by Abū Nu‘aym. According to Ibn ‘Abbās ˹the Prophet˺ said, ‘Had they set out and performed the mutual cursing, they would have gone home and found neither possessions nor family’. It is also reported that had they set out with this intention, they would have been consumed by fire.
القرآن:٣:٦١ –

فَمَنْ حَاجَّكَ فِيهِ مِنْ بَعْدِ مَا جَاءَكَ مِنَ الْعِلْمِ فَقُلْ تَعَالَوْا نَدْعُ أَبْنَاءَنَا وَأَبْنَاءَكُمْ وَنِسَاءَنَا وَنِسَاءَكُمْ وَأَنْفُسَنَا وَأَنْفُسَكُمْ ثُمَّ نَبْتَهِلْ فَنَجْعَلْ لَعْنَتَ اللَّهِ عَلَى الْكَاذِبِينَ  

{فمن حاجَّك} جادلك من النصارى {فيه من بعد ما جاءك من العلم} بأمره {فقل} لهم {تعالوا ندع أبناءنا وأبناءكم ونساءنا ونساءكم وأنفسنا وأنفسكم} فنجمعهم {ثم نبتهل} نتضرع في الدعاء {فنجعل لعنة الله على الكاذبين} بأن نقول: اللهم العن الكاذب في شأن عيسى وقد دعا النبي ﷺ وفد نجران لذلك لما حاجُّوه به فقالوا: حتى ننظر في أمرنا ثم نأتيك فقال ذو رأيهم: لقد عرفتم نبوته وأنه ما بأهل قوم نبيا إلا هلكوا فودعوا الرجل وانصرفوا فأتوا الرسول ﷺ وقد خرج معه الحسن والحسين وفاطمة وعلي وقال لهم: إذا دعوت فأمِّنوا فأبوا أن يلاعنوا وصالحوه على الجزية رواه أبو نُعَيْم، وعن ابن عباس: قال: لو خرج الذين يباهلون لرجعوا لا يجدون مالا ولا أهلا، ورُوي: لو خرجوا لاحترقوا.