Vishnupurana 3.11.60

3.11.60

śraddhayā cānnadānena priyapraśnottareṇa ca /
gacchataścānuyānena prītimutpādayedgṛhī //

"The householder is then to remain at eventide in his courtyard as long as it takes to milk a cow, or longer if he pleases, to await the arrival of a guest. Should such a one arrive, he is to be received with a hospitable welcome; a seat is to be offered to him, and his feet are to be washed, and food is to be given him with liberality, and he is to be civilly and kindly spoken to; and when he departs, to be sent away by his host with friendly wishes. A householder should ever pay attention to a guest who is not an inhabitant of the same village, but who comes from another place, and whose name and lineage are unknown. He who feeds himself, and neglects the poor and friendless stranger in want of hospitality, goes to hell. Let a householder who has a knowledge of Brahmá reverence a guest, without inquiring his studies, his school, his practices, or his race.