四分律比丘含注戒本 2.333

2.333

彼持食還，作法言：「大德！我足食已，知是，看是，作餘食法。」彼應取少許食已，當語彼言：「我止。汝取食之。」彼不作者。

That person brings back food and performs the procedure, saying: 'Venerable sir! I have had a satisfied meal. Know this, see this, and perform the procedure for leftover food.' That person should take a small amount of food, and then should say to him: 'I have ceased. You take it and eat it.' If that person does not perform it,