成唯識論述記 6.138

6.138

述曰：五十五說：此欲等五緣四境生，所樂、決定、曾習、所觀。所緣四境，能緣欲等，非是俱故。論說此五依四境生，若境不必俱，欲等未必並，所緣、能緣各各非定俱故，非必相資。此義如何等？

The Commentary states: Fascicle fifty-five states: These five, desire and so forth, arise in dependence on four objects: the agreeable, the determined, the previously practiced, and the contemplated. The four objects that are grasped and the grasping factors—desire and so forth—are not concurrent. The treatise says that these five arise depending on the four objects; if the objects are not necessarily concurrent, desire and so forth are not necessarily concurrent. Because the objects grasped and the grasping factors are each not definitely concurrent, they do not necessarily assist each other. How is this meaning explained?