What is the valid scope of comparison with Arabic poetic preludes?

Arrangement of the Qur’an and the Rhetorical Style of Surahs

• Classifying the Qur’an as a formally metered qaṣīdah
• A rhetorical similarity in arresting attention through imagery
• Assuming evocative imagery can occur only in poetry
• Calling every Qur’anic opening a verbatim quotation from poetry