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.
quran:42:14

And they did not become divided until after knowledge had come to them - out of jealous animosity between themselves. And if not for a word that preceded from your Lord ˹postponing the penalty˺ until a specified time, it would have been concluded between them. And indeed, those who were granted inheritance of the Scripture after them are, concerning it, in disquieting doubt.  

And they did not become divided, that is, the adherents of the ˹monotheistic˺ religions ˹did not become divided˺ in religion — so that some affirmed the Oneness ˹of God˺, while others rejected it — except after the knowledge, of His Oneness, had come to them, out of ˹jealous˺ rivalry, on the part of the disbelievers, among themselves. And were it not for a Word that preceded from your Lord, to defer requital ˹of them˺, until an appointed term, ˹until˺ the Day of Resurrection, it would have ˹already˺ been judged between them, to chastise the disbelievers in this world. And indeed those who were made heirs to the Scripture after them, namely, the Jews and the Christians, are truly in grave doubt concerning him, Muhammad (s).
القرآن:٤٢:١٤

وَمَا تَفَرَّقُوا إِلَّا مِنْ بَعْدِ مَا جَاءَهُمُ الْعِلْمُ بَغْيًا بَيْنَهُمْ ۚ وَلَوْلَا كَلِمَةٌ سَبَقَتْ مِنْ رَبِّكَ إِلَىٰ أَجَلٍ مُسَمًّى لَقُضِيَ بَيْنَهُمْ ۚ وَإِنَّ الَّذِينَ أُورِثُوا الْكِتَابَ مِنْ بَعْدِهِمْ لَفِي شَكٍّ مِنْهُ مُرِيبٍ  

{وما تفرَّقوا} أي أهل الأديان في الدين بأن وحد بعض وكفر بعض {إلا من بعد ما جاءهم العلم} بالتوحيد {بغياً} من الكافرين {بينهم ولولا كلمة سبقت من ربك} بتأخير الجزاء {إلى أجل مسمى} يوم القيامة {لقضي بينهم} بتعذيب الكافرين في الدنيا {وإن الذين أورثوا الكتاب من بعدهم} وهم اليهود والنصارى {لفي شك منه} من محمد ﷺ {مريب} موقع في الريبة.