pramāṇānāṃ pramāṇatvaṃ yena cānyena sādhyata ityādāvāha sarvasyetyādi / sarvasya ca na sādhyeyaṃ pramāṇāntarataḥ pramā /
Regarding [the objection] "by what other [means] is the validity of valid cognitions proved?", [the author] states "sarvasya" etc. The validity of all [cognitions] need not be proved by other means of valid cognition.