yo hi yajjanakasvabhāvāt parāvṛttaḥ sa tajjanako na bhavati, yathā nīlādijñānajanakānnīlāder vyāvṛttaṃ śrotraṃ na tasya nīlādijñānasya janakam /
For that which is differentiated from what has the nature of producing something cannot be productive of that thing, just as the ear, being differentiated from blue etc. which are productive of the cognition of blue etc., is not productive of that cognition of blue etc.