Surah Ash-Shuraa 42:52

وَكَذَٰلِكَ أَوْحَيْنَآ إِلَيْكَ رُوحًا مِّنْ أَمْرِنَا ۚ مَا كُنتَ تَدْرِى مَا ٱلْكِتَـٰبُ وَلَا ٱلْإِيمَـٰنُ وَلَـٰكِن جَعَلْنَـٰهُ نُورًا نَّهْدِى بِهِۦ مَن نَّشَآءُ مِنْ عِبَادِنَا ۚ وَإِنَّكَ لَتَهْدِىٓ إِلَىٰ صِرَٰطٍ مُّسْتَقِيمٍ

And thus We have revealed to you an inspiration of Our command [i.e., the Qur’ān]. You did not know what is the Book or [what is] faith, but We have made it a light by which We guide whom We will of Our servants. And indeed, [O Muḥammad], you guide to a straight path -

Translation: Saheeh International

Tafsir

And thus in the same way that We have revealed to messengers other than you have We revealed to you O Muhammad (s) a Spirit namely the Qur’ān by which hearts are revived from Our command that command which We reveal to you. …

Excerpt from Tafsir al-Jalalayn, commentary on 42:52, via Quran.com. The reader has the full commentary and 9 more tafsirs.