四分律比丘含注戒本 2.413

2.413

(If, having previously accepted an invitation, he does not entrust notice before or after the meal, entering the gate incurs a pātayantikā; other preliminary actions are duṣkṛtas. Cases of non-offence: the permitted conditions above; entrusting a bhikṣu; if there is no bhikṣu, not entrusting notice and going to a storehouse, a room at the border of a village, or going to a nunnery; going to the house of the person entrusted; if many people spread sitting mats and invite the bhikṣus; or if there are emergencies, it is permitted.)