Commentary on the Nyāyasūtra 11.p29

11.p29

ubhayorapi hetuḥ śāstraṃ karaṇaṃ ca| kiṃ tu padārthatattve jñāpakatayā niḥśreyase tadvyāpāravataḥ karaṇatayetyarthaḥ| tadidamuktam--tathā ceti| evaṃ ca sati śāstrasya niḥśreyase karttavye padārthatattvajñānasya nirūktibalena vyāpāratve darśite vyāpāravyāpāriṇoḥ kāryakāraṇabhāvaḥ| tathā vyāpāravatā śāstreṇa vyāpāraviṣayasya pramāṇādeḥ pratipādyapratipādakabhāvaḥ| tathā vyāpāraviṣayeṇa pramāṇādinā vyāpārasya tattvajñānasya viṣayaviṣayībhāvaḥ| tathā vyāpāreṇa tattvajñānena vyāpārulasya niḥśreyasasya kāryakāraṇabhāvaḥ| tathā vyāpāraviṣayaphalayorhetuhetumadbhāvaḥ saṃbandha sūcito nāntarīyakatvāt| na hyataddhetukastadvacāpāro nāma, nāpyatatkarma tadvacāpāraviṣayaḥ, nāpi tatphalānanuguṇastadvacāpāraḥ, tadvacāpāraviṣayo veti pajcasu vaktavyeṣu upalakṣaṇārthaṃ dvayamāha--śāstrapramāṇāditi| enameva vyutpattilabhyaṃ vyāpāramabhipretya tattvasya jñānamiti karmaṇi ṣaṣṭhī