aprāmāṇyanivṛttyarthā vedasyāpauruṣeyatā / yeṣṭā sāpi tvavastutvāt sādhanīyā na sādhanaiḥ
The authorlessness of the Veda is accepted [only] for the purpose of removing invalidity; and that [authorlessness] too, being non-existent [in a positive sense], cannot be established through means of proof.