etad uktaṃ bhavati yadi bhavadbhir avaśyaṃ vedasya prāmāṇyam abhyupeyate tadāsya puruṣādiva kartuḥ prāmāṇyaṃ yuktam, na svata iti, etac ca pūrvaṃ pratipāditam /
This means: if you necessarily accept the validity of the Veda, then its validity, like [that] of a human author, is reasonable [to come] from its author, not [to exist] inherently - and this has been established before.