yo jñānākāraḥ sa saṃvāditve sati tathāvidhāparapadārthajanitas tadyathāgrāhaka ākāro jñānākāraścāyam aviplutendriyasya nīlādipratibhāsaviśeṣaḥ saṃvādīti svabhāvahetuḥ /
[He states:] "The cognitive form, when it corresponds [to reality], is produced by another object of the same kind, just as the apprehending form; and this cognitive form, being the specific appearance of blue etc. in [someone with] unimpaired senses, is corresponding [to reality]" - this is an argument based on essential nature.