Surah Ya-Sin 36:69

وَمَا عَلَّمْنَـٰهُ ٱلشِّعْرَ وَمَا يَنۢبَغِى لَهُۥٓ ۚ إِنْ هُوَ إِلَّا ذِكْرٌ وَقُرْءَانٌ مُّبِينٌ

And We did not give him [i.e., Prophet Muḥammad (ﷺ)] knowledge of poetry, nor is it befitting for him. It is not but a message and a clear Qur’ān

Translation: Saheeh International

Tafsir

And We did not teach him that is the Prophet poetry — this was revealed to refute their saying ‘This Qur’ān that he has brought is but poetry!’ — nor is it poetry seemly nor is it facilitated for him. …

Excerpt from Tafsir al-Jalalayn, commentary on 36:69, via Quran.com. The reader has the full commentary and 9 more tafsirs.