俱舍論疏 20.48

20.48

On the Śāstra's statement: "Furthermore, this activity […] has another activity": this is a repeated refutation. If having activity is called present and lacking activity is called past and future, by what activity are past, future, and present established? This explains the three characters "how is activity [defined]?" at the end of the opening line of the verse. The character "activity" applies in two directions: pointing upward, it forms "what hinders activity"; pointing downward, it forms "how is activity [defined]?"