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:72:27 –

Except whom He has approved of messengers, and indeed, He sends before each messenger and behind him observers  

except to a messenger of whom He approves. Then, in addition to disclosing to him what He will ˹to disclose˺ of it, by way of ˹making it˺ a miracle for him, He despatches, He appoints and sends forth, before him, namely, the Messenger, and behind him watchers, angels to preserve him until He has conveyed ˹it˺ to him as part of the ˹entire˺ revelation,
القرآن:٧٢:٢٧ –

إِلَّا مَنِ ارْتَضَىٰ مِنْ رَسُولٍ فَإِنَّهُ يَسْلُكُ مِنْ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِ رَصَدًا  

{إلا من ارتضى من رسول فإنه} مع إطلاعه على ما شاء منه معجزة له {يسلك} يجعل ويسير {من بين يديه} أي الرسول {ومن خلفه رصدا} ملائكة يحفظونه حتى يبلغه في جملة الوحي.