瑜伽論記 15.354

15.354

若言有者，由相異故，應有異體者，景云：若立想等有別用者，用不離體，想等即應有實物性。應立量云：想等心所定有實體，以不離用故，猶如彼用。

If one says they exist, 'because their characteristics are different, they should have distinct substances': Jing says: if one posits that perception and so forth have distinct functions, and functions are not separate from substance, then perception and so forth should have substantial entityhood. One should establish the syllogism: mental factors such as perception definitely have substantial entities, because they are not separate from their functions, just like their functions.