YV 4.6e

If it is an Agnistoma, he makes a libation; if an Ukthya, he rubs (butter) on the enclosing-sticks; if it is an Atiratra, he goes forward uttering a text, to distinguish the sacrifices. 'On the instigation of god Savitr (with these words) he takes up the pressing-stone, for instigation, 'with the arms of the Açvins', he says; for the Açvins were the Adhvaryus of the gods; 'with the hands of Pusan', he says, for support. The Soma is cattle, the Upançu pressing-(stone) is cross breathing; in that he measures round the Upançu pressing-(stone), he confers cross-breathing upon cattle. 'To Indra thee! To Indra thee!' (with these words) he measures, for the Soma is taken for Indra. Five times he measures with the text [1]; the Pankti has five syllables, the sacrifice is fivefold, verily he wins the sacrifice. Five times (he measures) in silence; these make up ten; the Viraj has ten syllables, the Viraj is food; verily he wins food by the Viraj. 'Ye are savoury, conquerors of Vrtra', he says; this is the Soma-drinking of the waters; he who knows thus reaches not destruction in the waters. 'With thy light which is in the sky', he says; verily from these worlds he gathers him [2]. Soma, the king, reflected on the quarters, he entered the quarters; 'forward, behind, upward, downward', he says, verily from the quarters he gathers him; verily also he wins the quarters for him. 'O mother, come forth', he says; women are likely to desire him who knows thus. 'Thy unerring, watchful name, O Soma', he says [3]; this is Soma's Soma-drinking; he who knows thus reaches not destruction from Soma. When they press Soma they kill him; he keeps back shoots; verily he protects him. The shoots are the vital airs, Soma is cattle; he later lets go the shoots; verily he bestows vital airs upon cattle; two by two he lets them go; therefore the vital airs are in pairs. The Upançu Cup is breath; in that the cups are drawn beginning with the Upançu, they follow on breath.