sā śabdasya anyathā vācakaśaktyā vinā, na siddhyed ityevaṃ bodhakaśaktatām, avagamya buddhvā, tadananyagateḥ tasyābodhakaśakter anyā gatir nāsti śabdanityatvamantareṇeti, punar arthāpattyantareṇaiva śabdasya nityatvaniścayaḥ /
That [denotation] of words cannot be established without expressive power; having thus understood [its] expressive capacity, [and since] there is no other way for that [capacity] except through the eternality of words, the determination of the eternality of words is [achieved] through yet another arthāpatti [presumption].