俱舍論疏 6.19

6.19

論「此難不然至有親作力」，答也。無障疎因，果不得生，非是親作不成業道。法生、不生雖賴疎因，業感、不感由親作力。

The Śāstra says, “This objection is not correct... there is a direct active power,” which is the answer. With a non-obstructing remote cause, if the fruit cannot arise, it is not direct action and does not constitute a path of karma (karmapatha). Although the arising or non-arising of a dharma relies on remote causes, the retribution or non-retribution of karma is due to direct active power.