Vishnupurana 3.10.p2

3.10.p2

"As soon as a son is born his father should perform the ceremonies consequent upon the birth of a child and all other initiatory ceremonies as well as a Srādh which is the source of prosperity. He must feed two Brāhminis, seated with their faces to the east and according to his means must offer sacrifices to the celestials and the progenitors, O lord of earth. He must delightedly offer to the manes, balls of meat, mixed with curds, barley and jujubes with the four part of his finger. On every occasion of prosperity, he must perform this with all offerings and go through circumambulalations.