Rhetorical Inimitability — Definition and Four Types

Definition:
Rhetorical Inimitability (I'jaz al-Bayani) is the incapacity of all humans and jinn to produce anything comparable to the Quran in eloquence, style, and literary uniqueness — the most apparent dimension of its miracle for the eloquent Arabs.

Four Types:

1. Stylistic Inimitability: A genre unlike poetry, prose, or rhymed prose — a singular, independent form.
2. Structural Inimitability (Nazm): Incomparable coherence of words and meanings, as analyzed by Abd al-Qahir al-Jurjani.
3. Eloquence (Fasaha): Each word is in its optimal position — no synonym substitution is lossless.
4. Imagery (Taswir): The Quran's power to embody abstract meanings and move emotions through vivid imagery.

Evidence: The Quran challenged the Arabs — masters of eloquence — to produce a comparable surah, and they failed.