Markandeyapurana 29.38

29.38

vikalān bālavṛddhāṃśca bhojayeccāturāṃstathā /
vāñchate kṣutparītātmā yaccānyo 'nnamakiñcanaḥ //

“And he should daily perform the śrāddha with rice and other food and with water with regard to the pitṛs and brāhmans; or he should feed a brāhman. Taking up an agra[8] of the rice, he should present it to a brāhman: and he should give an alms to wandering brahmans who ask. The alms should be the size of a mouthful, the agra four mouthfuls. Brāhmans call the agra four times a hantakāra[9] But without giving food, or a hantakāra, an agra or an alms, according to his substance, he must not himself eat. And he should eat, after he has done reverence to guests, friends, paternal kinsmen, relatives, and petitioners, the maimed, and children and old men and the sick.

“If a man consumed with hunger, or another who is destitute wants food, he should be fed by a householder who has adequate[10] substance. Whatever kinsman is dispirited when he reaches a prosperous kinsman, the latter gets the sin that has been done by the dispirited man. And the precept must be observed at evening, and he should do reverence to the guest who has arrived there after sunset, accordingly to his ability, with a bed, a seat and food.