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:17:85 –

And they ask you, ˹O Muhammad˺, about the soul. Say, "The soul is of the affair of my Lord. And mankind have not been given of knowledge except a little."  

And they will question you, that is, the Jews, concerning the Spirit, from which the body receives life. Say, to them: ‘The Spirit is of the command of my Lord, that is, ˹it belongs to˺ His knowledge, about which you know not. And of knowledge you have not been given except a little’, relative to His knowledge, exalted be He.
القرآن:١٧:٨٥ –

وَيَسْأَلُونَكَ عَنِ الرُّوحِ ۖ قُلِ الرُّوحُ مِنْ أَمْرِ رَبِّي وَمَا أُوتِيتُمْ مِنَ الْعِلْمِ إِلَّا قَلِيلًا  

{ويسألونك} أي اليهود {عن الروح} الذي يحيا به البدن {قل} لهم {الروح من أمر ربي} أي علمه لا تعلمونه {وما أويتم من العلم إلا قليلاً} بالنسبة إلى علمه تعالى.