Nyayasutra 1.43.4

1.43.4

atha[a]kathakatve'pi teṣāṃ niyamabandhādeva nigrahasthānodbhāvakatvam | na ca niyogānapekṣā kathopakrame sabhyānāṃ tathā niyoge'pi kathakayoḥ prakṛtaviṣayaparamparāsujñatvajijñāsāyāṃ tatparicchedakatayopāttānāṃ tāvadudbhāvyaṃ, yāva[du] dbhāvanaṃ vinā na tatparicchedakatvavyāghātaḥ | tacca paryyanuyojyopekṣaṇaṃ tadudbhāvanaṃ, nāntarīyokodbhāvanaṃ ca nigrahasthānāntaram | tatra satsādhanopakramakathāyāmādyadvitīyakakṣayostadudbhāvanaṃ na sambhavatyeva | dvitīyapakṣavādī yadi prativādigataṃ niranuyojyānuyogamudbhāvayati tadā tasya vijayaḥ syāt | evaṃ madhyasthena tadudbhāvane tenaiva tatphalaṃ khaṇḍitaṃ syāditi madhyasthatvaṃvyāghātaḥ | tatrāpyasaduttare caturthakakṣā[yāṃ]tu prativādī yadi vānoya ? [vādino]niranuyojyānuyogamudbhāvayati tadā tadvijayaḥ syāt | tadāpi madhyasthasya na tadudbhāvanāvasaraḥ kathā khaṇḍanāpatteḥ |