apramādvitayāsattve jñāta ityādinābhyupagamyāpramādvayāsattāsiddhiṃ paramatenaiva parataḥprāmāṇyaṃ pratipādayati anyathānupapattyeti /
[The opponent] admits [the thesis about] "the cognition of the absence of two kinds of invalid cognition" and thereby establishes the extrinsic validity [of cognition] according to the opponent's own view, [arguing] that it cannot be otherwise.