tathā hi vācakasya śabdasya nityatvaṃ sādhayitumiṣṭaṃ nānyasya, tataś ca yatkevalavarṇanityasādhanaṃ bhavatāṃ tat prastutānupayogi /
For [you] desire to prove the eternality of only that word which is expressive, not of anything else; therefore your proofs for the eternality of mere letters are irrelevant to the present discussion.