俱舍論記 30.84

30.84

「都無所至說名了境」者，論主答。識於所緣都無所作，但似境生，說能了境。如麥果等酬麥因等，雖無所作而似因起，說名酬因。如是識生，雖無所作而似境故，說名了境。

Regarding "It performs nothing at all... is said to cognize the object": the author of the treatise answers. Consciousness performs nothing at all with regard to its intentional object; it is merely because it arises bearing resemblance to the object that it is said to 'cognize the object'. Just as a barley grain or the like rewards a barley seed or the like, although it performs no action, because it arises resembling the cause, it is said to 'reward the cause'. In this way, when consciousness arises, although it performs no action, because it resembles the object, it is said to 'cognize the object'.