俱舍論記 17.131

17.131

「頌曰至多業能圓滿」者，若言一業引一生，不能引多生，答前問。若言一生一業引，不由多業引，答後問。下句釋妨。

Regarding the passage from "The verse says" up to "many karmas can fulfill": if one says that one karma projects one lifetime and cannot project multiple lifetimes, this answers the former question. If one says that one lifetime is projected by one karma and not projected by multiple karmas, this answers the latter question. The lower line resolves an objection.