drutamadhyavilambinā"kāreṇa hi jñānam upajāyate, na ca śabdasya drutākāraḥ samasti tasya nityavyāpitvenaikarūpatvāt /
Cognition arises in the form of "fast", "medium" and "slow", but the Word-Sound cannot have the "fast" form because, being eternal and all-pervading, it must have only one form.