We have not instructed the (Prophet) in Poetry, nor is it meet for him: this is no less than a Message and a Qur’an making things clear:
Here “Poetry” is used as connoting fairy tales,
imaginary descriptions, things futile, false, or obscure,
such as decadent Poetry is, whereas the Quran is a
practical guide, true and clear.
Yusuf Ali, Abdullah. Translation and Commentary of the Quran. (surah 36 verse 69). Quran Arabic with English Translation & Commentary (Tafsir) by Abdullah Yusuf Ali, Free Download (quran4u.com)