僧羯磨 3.111

3.111

別眾食白入出法（別眾者，若四人、若過四人。若二人、三人，隨意食。四人、若過，應分二部更互食。若比丘有別眾食因緣，欲入食者，當起白言：）我有某別眾食緣，欲求入。（佛言：「當聽隨上座次入。」別眾食緣者，病時、作衣時、施衣時、道行時、船行時、大眾集時、沙門施食時。若比丘無別眾食因緣，彼比丘即當起白言：）我於此別眾食中無因緣，欲求出。（佛言：「聽出。」若比丘別眾食，咽咽波逸提。若有因緣不說，突吉羅。）

Procedure for Announcing Entry and Exit for Eating Separately from the Assembly. (Eating separately from the assembly means four persons or more than four persons. If two persons or three persons, they may eat at will. If four persons or more, they should divide into two groups and eat in turn. If a bhikṣu has a proper occasion for eating separately from the assembly and wishes to join to eat, he should stand and announce:) 'I have such an occasion for eating separately from the assembly, and wish to seek entry.' (The Buddha said: 'He should be permitted to enter according to seniority under the theras.' The occasions for eating separately from the assembly are: during sickness, during robe-making, during robe-distribution, when traveling on foot, when traveling by boat, when a great gathering convenes, and when śramaṇas bestow food. If a bhikṣu has no proper occasion for eating separately from the assembly, that bhikṣu should immediately stand and announce:) 'I have no occasion among this separate group meal, and wish to seek departure.' (The Buddha said: 'Permit him to depart.' If a bhikṣu eats separately from the assembly [without cause], it is a prāyaścittika for every swallow. If he has an occasion but does not announce it, it is a duṣkṛta.)