الْعَقْدُ — الْحَلُّ
Versifying prose and rendering verse as prose.
ʿAqd turns prose material into verse, while ḥall renders poetic material as prose. In either case, preservation of the idea and modification of expression must be judged separately; literal word-for-word copying is not a prerequisite.
Looking only at the final output is insufficient. The direction of transformation depends on the source form: prose-to-verse is one device, verse-to-prose the other.