Manavashrautasutra 11.9.4

Now, the supplement:

The year is Prajāpati. His northern course [of the sun], the bright half of the month, the day, the morning—that belongs to the gods; midday belongs to men; the afternoon—that belongs to the fathers. Now, how the sacrifice is performed on both sides:

Day after day he should perform an ancestral rite with food or with water,

or even with milk, roots, and fruits, he should bring pleasure to the fathers.

The aṣṭakā rites, the ancestral rite on parvan days, the dark fortnight, the two solstices,

the availability of materials and brahmins—these are proclaimed as the times for an ancestral rite.

At a marriage, at the birth of a son, at an offering to the fathers, at a soma sacrifice,

at a sacred bathing place, and when a [worthy] brahmin has arrived—these are the six [occasions] while the father is living.

At the after-aṣṭakā rite, upon arriving at Gayā, and on the day of death that occurs,

a son should perform the ancestral rite for the mother even while the father is living.

When the sun has entered the sign of Virgo, whatever sixteen days there are—

they are equal to solemn sacrifices; what is given to the fathers [then] is imperishable.

Beginning with the fifth lunar day of the dark fortnight: one desiring a son [should perform it] on the fifth; one desiring wealth on the sixth; one desiring cattle on the seventh; one desiring health on the eighth; one desiring splendour on the ninth; one desiring proper food on the tenth; one desiring prosperity on the eleventh; one desiring growth on the twelfth; one desiring fame on the thirteenth; one desiring health for one slain by weapons on the fourteenth; on the new-moon day, one desiring all wishes.

One desiring nourishment should perform the ancestral rite with sesame seeds; one desiring prosperity with cakes; one desiring splendour with clarified butter, molasses, and sesame seeds; one desiring welfare, good fortune, or health, or one desiring all wishes, [should perform it] with milk-rice, rice with sesame, beans, curd, and barley gruel.

Together with the brahmins invited on the preceding day, the fathers indeed enter;

and the sacrificer during that night should live as a student of the Veda.

Having given an ancestral rite and eaten of it, he who sets out on a journey—

for that month his fathers eat, having dust for their food.

If having given or eaten [at] an ancestral rite, / one engages in sexual intercourse,

for that month his fathers / feed on semen.

[Travelling on] a journey [after] an ancestral rite, he becomes a horse; / eating again, he becomes a crow;

performing manual labor, he is born a servant; / having intercourse with a woman, a village pig.

Two in the rite for the gods, three in the rite for the fathers, / or one in each [rite],

he should feed, even if very wealthy; / he should not attach himself to vast expansion.

Hospitable reception, place and time, / material requisites, and the excellence of the brāhmaṇas:

these five vast expansion ruins; / therefore, let him not desire vast expansion.

One should assiduously feed at an ancestral rite / a Ṛgvedic priest who has crossed over the Veda,

or an adhvaryu priest who has reached the end of his Vedic branch, / or a Chāndoga (Sāmavedic singer) who has completed his study;

one who maintains five fires, one who knows the Trisuparṇa, / one who knows the Triṇāciketa fire, one who knows the six auxiliary sciences,

the offspring of a marriage by the Brahma rite, / and one who sings the Jyeṣṭhasāman;

a maternal grandfather, a maternal uncle, / a sister's son, a father-in-law, a teacher,

a daughter's son, a son-in-law, a kinsman, / and an officiating priest and a sacrificer he should feed.

At whose ancestral rite there do not eat / brāhmaṇas who have crossed over the Veda,

unperformed that ancestral rite becomes; / it does not reach the fathers.

At whose ancestral rite there do not eat / brāhmaṇas belonging to one's own Vedic branch,

demonic that ancestral rite becomes; / it does not reach the fathers.

One who knows the meaning of the Veda, an expounder, / one who is continually established as a student of the Veda,

and a centenarian—these should be recognized / as brāhmaṇas who are purifiers of the assembly.

If any one of these, being honored, / should eat at someone's ancestral rite,

for his fathers there would be satisfaction / eternal, lasting seven generations.

Sesame seeds protect from the sons of Diti; / darbha grass protects from the rākṣasas;

therefore, they should be given in gifts / by one who desires prosperity for himself.