The Sūtra (2) (canonical aphorism) which establishes the validity of the Āgamas (2) (canonical works) through logical reasoning, inspite of their (Āgamas) authority being axiomatic, because they are the articulations of the Āpta (unimpeachable authority on Truth).
savvannupamāṇāo, jai vi ya ussaggao suyapasiddhiī.
vittharao'pāyāṇa ya, darisaṇamii kāragaṃ tamhā...
(BṛBhā 317)