俱舍論疏 14.31

14.31

論「有餘釋言至名作無失」，敘異說也。從作生故，是作果；生後作故，是作因。因取果名、果取因名，名作無失。太法師釋云：「為求無作發起作業是作因，正起作時發起無作是作果。」

The treatise says: "Other masters explain […] there is no fault in calling it an action," reciting an alternative explanation. Because it arises from an action, it is the effect of an action; because it gives rise to subsequent action, it is the cause of an action. The cause takes the name of the effect, and the effect takes the name of the cause; hence there is no fault in calling it an action. Master Tai explains: "To seek unmanifested [discipline], one initiates active karma—this is the cause of action; at the precise time of generating action, one initiates unmanifested [discipline]—this is the effect of action."