asambaddhastu vidviṣṭaḥ satyavādī kathaṃ bhavet / ato 'nyakartṛko 'pyasti vedakārāgamo na naḥ //
But how could someone who is unconnected [with the Veda] and hostile [to it] be truthful? Therefore, for us, there exists no scripture, even one composed by others, [that could establish] an author of the Veda.