yo hi yajjanakaḥ sa tajjanakasvabhāvāparāvṛttaḥ / yathā nīlajñānajanakaṃ nīlaṃ svasmāt svabhāvāt /
For that which is productive of something cannot be differentiated from the nature of being productive of that thing, just as blue, which is productive of the cognition of blue, [cannot be differentiated] from its own nature.