ata ityādinā bāhyāpekṣayā śabdasyānumānatve sādhye trairūpyarahitatvenetyasya hetor vaiphalyam āha siddhasādhyatayā /
With [the words] "therefore" etc., [the author] states the futility of this reason of "lacking triple characteristic" when proving the inferential nature of word with respect to external [matters], due to [its] being already established