«وأما الحل فهو أن ينثر نظما»
Ḥall means rendering poetry in prose.
Ḥall works in the reverse direction from ʿaqd: it takes existing verse and renders its sense in prose. A good rendering need not reproduce every word in its original metrical order.
It should preserve the central relation, such as cause and consequence, while creating coherent prose. Both fidelity of sense and prose fluency matter.