俱舍論記 16.45

16.45

「語善業道至謂愛語等」者，語善業道，於語妙行不攝一分，謂愛語、和合語、實語等，非麁顯故，而非業道。問：善語業道何故不說加行、後起？解云：理亦應言加行、後起，而不說者，影顯可知，或等中顯，或愛語等以是輕故尚非業道，況前加行及與後起。此即舉重顯輕，略而不說。

[On the text,] "Vocal good paths of karma [...] meaning endearing speech, etc.": Vocal good paths of karma do not subsume a portion of vocal excellent conduct, meaning endearing speech, conciliatory speech, truthful speech, etc.; because they are not coarse and manifest, they are not paths of karma. Question: Why do vocal good paths of karma not mention preparatory and subsequent actions? Explanation: In principle, preparatory and subsequent actions should also be mentioned; the reason they are not mentioned is that their presence can be understood by implication, or they are made evident within the word "etc.", or because endearing speech and the like are light and are not even paths of karma, much less the preparatory and subsequent actions. This is raising the heavy to make evident the light, and omitting them for brevity.