فنعلم أن كل بليغ فصيح ولا عكس.
Therefore every balīgh utterance is faṣīḥ, but not every faṣīḥ utterance is balīgh.
Faṣāḥah is already built into the definition of Balāghah. A defective word or syntactically obscure sentence cannot satisfy the full technical criterion.
Conversely, speech may be linguistically sound but poorly suited to its hearer or purpose. It remains faṣīḥ without being balīgh in that particular circumstance.
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Introduction to Faṣāḥah, Balāghah and the Three Disciplines
فنعلم أن كل بليغ فصيح ولا عكس.
Therefore every balīgh utterance is faṣīḥ, but not every faṣīḥ utterance is balīgh.
Faṣāḥah is already built into the definition of Balāghah. A defective word or syntactically obscure sentence cannot satisfy the full technical criterion.
Conversely, speech may be linguistically sound but poorly suited to its hearer or purpose. It remains faṣīḥ without being balīgh in that particular circumstance.