YV 2.5f

With the seasons [1] they consecrate him; with the seasons likewise he must be set free; 'As a mother her son, the earth Agni of the dust', he says; verily having consecrated him with the seasons, with the season he sets him free. With (a verse) addressed to Vaiçvanara, he takes the sling; verily he makes it ready. For Nirrti there are three (bricks) black, dried by a chaff fire; chaff is the portion of Nirrti, black is the form of Nirrti; verily by her own form he propitiates Nirrti. They go to this quarter; this [2] is the quarter of Nirrti; verily in her own quarter he propitiates Nirrti. He places (it) in a self-made hole or a cleft; that is the abode of Nirrti; verily he propitiates Nirrti in her own abode. He places (them) over against the sling, the noose is connected with Nirrti; verily he frees him straightway from the noose of Nirrti. He places three, man is threefold in arrangement; verily he removes by sacrifice Nirrti from the whole extent of man. He places them going away (from the place of sacrifice); verily he drives away Nirrti from him [3]. They return without looking round, to conceal Nirrti. Having purified, they pay reverence, for purity. To the Garhapatya they pay reverence; verily having wandered in the world of Nirrti, they return, purified, to the world of the gods. They pay reverence with one (verse); verily in one place they bestow strength on the sacrificer. 'Abode and collector of riches', he says; rich are offspring and cattle; verily he unites him with offspring and cattle. With man's measure he metes out; man is commensurate with the sacrifice; verily he metes him with a member of the sacrifice; so great is he as a man with arms extended; so much strength is there in man; verily with strength he metes him. Winged is he, for wingless he could not fly; these wings are longer by an ell; therefore birds have strength by their wings.