وعلم البيان للثاني
And ʿilm al-bayan for the second task.
The second task here is avoiding semantic obscurity. A meaning can be presented directly or through simile, figurative expression or allusion. Such modes differ in how readily the intended sense is reached.
Saying “He is generous” states the point directly. Saying “His table is always set for guests” may indirectly suggest generosity. The second form is successful when the hearer can understand the intended link. Excessive remoteness risks semantic obscurity.