Surah Al-Isra 17:85

وَيَسْـَٔلُونَكَ عَنِ ٱلرُّوحِ ۖ قُلِ ٱلرُّوحُ مِنْ أَمْرِ رَبِّى وَمَآ أُوتِيتُم مِّنَ ٱلْعِلْمِ إِلَّا قَلِيلًا

And they ask you, [O Muḥammad], about the soul. Say, "The soul is of the affair [i.e., concern] of my Lord. And you [i.e., mankind] have not been given of knowledge except a little."

Translation: Saheeh International

Tafsir

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.

Excerpt from Tafsir al-Jalalayn, commentary on 17:85, via Quran.com. The reader has the full commentary and 9 more tafsirs.