The Compendium of Caraka 1.8.12

1.8.12

pañcendriyabuddhayaḥ cakṣurbuddhyādikāḥ tāḥ punarindriyendriyārthasattvātmasannikarṣajāḥ kṣaṇikā niścayātmikāśca ityetat pañcapañcakam //

The five sense cognitions are those beginning with visual cognition; these, moreover, arise from the contact of the sense, the sense object, the mind, and the self; they are momentary and deterministic. Such is the pentad of pentads.