Aitareyabrahmana 2.30

2.30

prāṇā vai dvidevatyāḥ, paśava iḷā. dvidevatyān bhakṣayitveḷām upahvayate.
paśavo vā iḷā, paśūn eva tad upahvayate, paśūn yajamāne dadhāti
tad āhur: avāntareḷām pūrvām prāśnīyā+t \ hotṛcamasam bhakṣaye+t iti \
avāntareḷām eva pūrvām prāśnīyād, atha hotṛcamasam bhakṣayed
yad vāva dvidevatyān pūrvān bhakṣayati,
tenāsya somapīthaḥ pūrvo bhakṣito bhavati.
tasmād avantareḷam eva pūrvām prāśnīyād, atha= hotṛcamasam bhakṣayet.
tad ubhayato 'nnādyam parigṛhṇāti somapīthābhyām, annādyasya parigṛhītyai
prāṇā vai dvidevatyā, ātmā hotṛcamaso.
dvidevatyānāṃ saṃsravān hotṛcamase samavanayaty,
ātmany eva tad dhotā prāṇān samavanayate sarvāyuḥ sarvāyutvāya
sarvam āyur eti ya evaṃ veda

ii. 30 (ix. 6). (The cups ) for two deities are the breaths; the sacrificial food is cattle. Having partaken of (the cups) for two deities he invokes the sacrificial food; the sacrificial food is cattle; verily thus he invokes cattle; he confers cattle upon the sacrificer. They say ‘Should he eat first the subdivided sacrificial food? (Or) should he partake of the Hotṛ’s goblet?’ First should he eat the subdivided sacrificial food, and then should he partake of the Hotṛ’s goblet. In that he partakes first of (the cups) for two deities, thereby is the Soma drink first partaken of by him; therefore should he first eat the subdivided sacrificial food, and then partake of the Hotṛ’s goblet; then on both sides he envelopes food with Soma drinkings, to envelope food. (The cups) for two deities are the breaths; the Hotṛ’s

goblet is the body; the remains of (the cups) for two deities he pours down into the Hotṛ's goblet; verily thus the Hotṛ places the breaths in the body, with full life for fullness of life; a full life lives he who knows thus.