«في أي غرض كان»
Whatever the purpose may be.
This wording makes speaker-level eloquence broader than poetry, praise, or sermons. Giving information, answering a question, teaching, apologizing, and issuing an instruction can all call upon the capacity for clear and sound Arabic expression.
It does not require expertise in every field of knowledge. Rather, when the subject is understood by the speaker, their linguistic competence should not be confined to one memorized type of utterance.