If a poem exhibits both taḍmīn and tawriyah, how should it be classified?

Iqtibās and Taḍmīn: Quoting Scripture and Incorporating Poetry

• Only one device can occur; the other is impossible
• Tawriyah necessarily requires Qur’anic incorporation
• Identify the distinct criterion for each device
• Taḍmīn requires two contradictory propositions