NyāBh zu NyāSū, 1, 1, 1, 8.1 heyam tasya nirvartakaṃ hānam ātyantikam tasyopāyo 'dhigantavya ity etāni catvāry arthapadāni samyag buddhvā niḥśreyasam adhigacchati //

NyāBh zu NyāSū, 1, 1, 1, 9.1 tatra saṃśayādīnāṃ pṛthagvacanam anarthakam saṃśayādayo yathāsambhavaṃ pramāṇeṣu prameyeṣu cāntarbhavanto na vyatiricyanta iti satyam etat imās tu catasro vidyāḥ pṛthakprasthānāḥ prāṇabhṛtām anugrahāyopadiśyante yāsāṃ caturthīyam ānvīkṣikī nyāyavidyā //