Poetic syllogism is built from imaginative premises, which may be true, false but possible, or literally impossible. Their unifying function is to form an affecting mental image.
Qabḍ and basṭ describe broad emotional reactions; warning and encouragement describe important practical aims. Metaphor and simile give images force, while skilled delivery may intensify the response.
The decisive distinction is that emotional impact is not demonstrative truth. Recognizing this boundary also prepares us for the next art, sophistical reasoning (al-qiyās al-safsaṭī).