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:42:13 –

He has ordained for you of religion what He enjoined upon Noah and that which We have revealed to you, ˹O Muhammad˺, and what We enjoined upon Abraham and Moses and Jesus - to establish the religion and not be divided therein. Difficult for those who associate others with Allah is that to which you invite them. Allah chooses for Himself whom He wills and guides to Himself whoever turns back ˹to Him˺.  

He has prescribed for you as a religion that which He enjoined upon Noah — for he was the first of the prophets ˹sent˺ with a ˹Divine˺ Law — and that which We have revealed to you, and that which We enjoined upon Abraham, and Moses, and Jesus ˹declaring˺, ‘Establish religion and do not be divided in it’: this is what has been prescribed and enjoined upon ˹those mentioned above˺, and what has been revealed to Muhammad (s), and it is the affirmation of ˹God’s˺ Oneness. Dreadful is for the idolaters that to which you summon them, in the way of affirming the Oneness ˹of God˺. God chooses for it, for the ˹task of˺ affirming ˹His˺ Oneness, whomever He will, and He guides to it whomever turns penitently, ˹whomever˺ applies himself to obedience of Him.
القرآن:٤٢:١٣ –

شَرَعَ لَكُمْ مِنَ الدِّينِ مَا وَصَّىٰ بِهِ نُوحًا وَالَّذِي أَوْحَيْنَا إِلَيْكَ وَمَا وَصَّيْنَا بِهِ إِبْرَاهِيمَ وَمُوسَىٰ وَعِيسَىٰ ۖ أَنْ أَقِيمُوا الدِّينَ وَلَا تَتَفَرَّقُوا فِيهِ ۚ كَبُرَ عَلَى الْمُشْرِكِينَ مَا تَدْعُوهُمْ إِلَيْهِ ۚ اللَّهُ يَجْتَبِي إِلَيْهِ مَنْ يَشَاءُ وَيَهْدِي إِلَيْهِ مَنْ يُنِيبُ  

{شرع لكم من الدين ما وصى به نوحاً} هو أول أنبياء الشريعة {والذي أوحينا إليك وما وصينا به إبراهيم وموسى وعيسى أن أقيموا الدين ولا تتفرقوا فيه} هذا هو المشروع الموصى به، والموحى إلى محمد ﷺ وهو التوحيد {كبر} عظم {على المشركين ما تدعوهم إليه} من التوحيد {الله يجتبي إليه} إلى التوحيد {من يشاء ويهدي إليه من ينيب} يقبل إلى طاعته.