etad uktaṃ bhavati jñāto hi jñāpako vyāpyam arthaṃ jñāpayati, na sattāmātreṇa, tataśca vādī svayam eva tāvad apratipannaḥ kathaṃ parapratipādanāya sādhanam upādāsyate //
This means that an indicator indicates the pervaded object only when it is [itself] known, not by mere existence, and therefore how can a disputant who himself has not understood [the reason] employ that proof to convince others?