nāto dṛṣṭārthasambandhaḥ śabdo bhavati vācakaḥ / khavṛttyā vastutastveṣa vācako neti sādhitam
Therefore it is not [true that] a word becomes expressive [only] when its relation to the meaning has been seen; it has been established that in reality this [word] is not expressive through [mere] empty function