YV 2.6p

thou art the fixed point of Indra', he says; for the Sadas has Indra for its deity. Now the knot which he first ties, if he were not to unloose it, the Adhvaryu would perish through suppression of urine; therefore it must be unloosed. The oblation-holder is the head of the sacrifice, the sounding holes are the vital airs. They are dug in the oblation-holder; therefore. the vital airs are in the head. They are dug below; therefore the vital airs are below the head. 'I dig those which slay the Raksas, which slay the spell, and which are of Visnu', he says, for the sounding-holes have Visnu for their deity. The Asuras in retreat dug in spells against the vital airs of the gods; they found them at the distance of an arm; therefore they are dug an arm's length deep. 'Here do I cast out the spell [1] which an equal or an unequal hath buried', he says; there are two sorts of men, the equal and the unequal; verily whatever spell they dig against him he thus casts out. He unites them; therefore the vital airs are united within. He does not combine them; therefore the vital airs are not combined. He pours water over; therefore the vital airs are moist within. (The water) he pours is mixed with barley [2]; barley is strength, the sounding-holes are the vital airs; verily he places strength in the vital airs. He spreads over the strew; therefore the vital airs are hairy within. He besprinkles (the holes) with butter; butter is brilliance, the sounding-holes are the vital airs; verily he places brilliance in the vital airs. The pressing-boards are the jaws of the sacrifice; he does not join them, for the jaws are not joined; or rather at a long Soma sacrifice they should be joined, for firmness. The oblation-holder is the head of the sacrifice [3], the sounding-holes are the vital airs, the pressing- boards the jaws, the skin the tongue, the pressing-stones the teeth the Ahavaniya the mouth, the high altar the nose, the Sadas the stomach.