Nyāya Sūtras 82.5

82.5

evaṃ pramāṇasādhāyāpy upādeyo viśeṣahetvabhāvāt, so 'yaṃ viśeṣahetuparigraham antareṇa dṛṣṭānta ekasmin pakṣe upādeyo na pratipakṣa ity anekāntaḥ/ ekasmiṃś ca pakṣe dṛṣṭānta ity anekānto viśeṣahetvabhāvād iti/

so it should also be adduced to establish the means of valid cognition, because there is no differentiating reason. Thus, an example without the support of a differentiating reason, being adduced for one thesis and not for the counter-thesis, is inconclusive. And an example [applied only] to one thesis is inconclusive because there is no differentiating reason.