四分律刪繁補闕行事鈔 2.228

2.228

勸足食戒三十六。五緣：一他足食竟，二知，三發言強勸，四不作殘法，五前人食犯。

Precept 36: Urging one who has eaten to fullness to eat further. Five conditions: first, the other has finished eating to fullness; second, knowing this; third, speaking words forcefully urging him; fourth, the residual-food rite is not performed; fifth, the counterpart eats it, which incurs the transgression.