If she receives post-midday tonics, seven-day tonics, or lifetime tonics for the purpose of food, she commits an offense of wrong conduct. For every mouthful swallowed, she commits an offense of wrong conduct.

Non-offenses There is no offense:

if she has been invited, but has not refused an offer to eat more; if she drinks congee; if she eats more after getting permission from the person who invited her; if, when there is a reason, she uses post-midday tonics, seven-day tonics, or lifetime tonics; if she is insane; if she is the first offender. The fourth training rule is finished.

Theravāda Collection on Monastic Law The Nuns’ Analysis The chapter on offenses entailing confession The subchapter on monasteries Being stingy with families

Origin story At one time when the Buddha was staying at Sāvatthī in Anāthapiṇḍika’s Monastery, a certain nun there was walking for almsfood along a street. She then went to a certain family where she sat down on the prepared seat. The people there gave her a meal and said, “Venerable, other nuns may come too.” Then that nun thought, “What can I do so that other nuns don’t come?” And she went up to other nuns and said, “Venerables, in such-and-such a place there are malicious dogs, a fierce ox, and it’s muddy. Don’t go there.” Another nun, too, went to that family while walking for almsfood along that street. She sat down on the prepared seat and the people there gave her a meal. They then asked her, “Venerable, why don’t the nuns come here?”