四分律刪繁補闕行事鈔 2.226

2.226

In the Dharmaguptaka Vinaya: For the leftovers of a sick person, one need not perform the residual-food rite. In the Samantapāsādikā and the Vinayavibhāṣā, regarding the leftovers of a sick person, whether partially eaten or uneaten, it all counts as residual food. In the Mahāsāṃghika-vinaya, when one person performs the rite, everyone else may partake; it is also like this in this Vinaya. In the Vinaya, food of both the Saṃgha and the laity may be subjected to the rite.
When performing the residual-food rite, there are fifteen distinct elements. Within the agent who performs it, there are three: first, he must be a bhikṣu; second, he must have previously eaten to fullness, excluding improper food and insufficient food; third, his body must be healthy and at ease, excluding illness. Regarding the counterpart [recipient], there are also three: first, it must be a time of abundance, excluding scarcity; second, the counterpart must be a bhikṣu; third, he must be one who has not yet eaten to fullness. Regarding the entity of the food itself, there are also three: first, it must be timely food and pure (the Sarvāstivāda-vinaya-vibhāṣā states that impure food cannot serve for the rite); second, it must be freshly pure food, not the leftovers of a sick person; third, it must not be concealed food.
Three actions must be performed by oneself: first, declaring it in person—one should receive it from a kappiyakāraka and, kneeling on alternating knees before the bhikṣu who has not yet eaten to fullness, say: 'Venerable sir! Having eaten to fullness, knowing this and seeing this, I perform the residual-food rite'; second, handing it over to the counterpart; third, stretching out one's hands within reach. Three actions are performed by the counterpart: first, he receives it as food; second, he verbally states, 'I stop, take and eat it'; third, he passes it to others. These three groups of five elements are all based on the Vinaya text.
In the Pañcavargika-vinaya, the Buddha said: Place the food in the bowl, lift it with the hands, bare the right shoulder, place the right knee on the ground, and say: 'Venerable ones, single-mindedly pay heed! I, named so-and-so, have already eaten to fullness.' The rest is as above. If one has not eaten of it at all, returning it and saying, 'This is my leftover, given to you,' also counts as residual food. The bhikṣuṇīs fully possess the residual-food rite.
The Mahāsāṃghika-vinaya states: If one holds both a bowl and a basin to perform the rite, but eats only from the bowl, that in the bowl becomes residual food, while that in the basin does not. A doctrinal interpretation states: If someone has not yet finished eating and calls over one who has eaten to fullness, giving him the food and saying, 'This is my leftover,' it should succeed without hindrance. If one forcefully urges him without declaring it to be leftover, he transgresses the subsequent precept.