四分律刪繁補闕行事鈔 2.375

2.375

後三業明成就。身二持者，離殺等過，名身止持；受食食等，名身作持。口二持者，離口四過名止；知淨語等名作。身口各二犯，反上應知。單意業中，不成持犯；若動身口，思亦成持犯。後更說之。

Next, clarifying fulfillment in the three karmas. As for the two observances of the body: departing from faults such as killing is called bodily observance by abstention; formal receipt of food, eating, and so forth, is called bodily observance by action. As for the two observances of speech: departing from the four faults of speech is called abstention; knowing words of purification and so forth is called action. The two transgressions of body and speech respectively should be known as the opposite of the above. Within solitary mental karma, observance and transgression are not constituted; but if it moves body or speech, volition also constitutes observance and transgression. This will be explained further below.