YV 2.7f

They became the seasons, and that is why the seasonal periods are seasonal periods. They are the children of the seasons, and therefore [1] they are said to be connected with the seasons. Those, who knowing thus perform (the rite) of eleven nights, create offspring, win offspring, procure offspring, and possess offspring. There is an Atiratra with the form of light; verily they place light before them, to reveal the world of heaven. There is a Prsthva Sadaha; the seasons are six, the Prsthas are six; verily by the Prsthas they mount upon the seasons, by the seasons upon the year; verily in the year they find support. There is a Caturvinça; the Gayatri has twenty-four syllables [2], splendour is connected with the Gayatri; verily in the Gayatri and in splendour they find support. There is a Catucçatvarinça; the Tristubh has forty-four syllables, the Tristubh is power; verily in the Tristubh and in power they find support. There is an Astacatvarinça; the Jagati has forty-eight syllables, cattle are connected with the Jagati; verily in the Jagati and in cattle they find support. (The rite) is of eleven nights, the seasons are five, the seasonal periods are five; verily in the seasons, in the seasonal periods, and in the year they find support and win offspring. There are Atiratras on either side, to secure offspring. He should draw the cup for Indra and Vayu first if he desire, 'May my offspring accord in order of seniority.' Offspring are in accord according to the arrangement of the sacrifice, and if the sacrifice is disarranged, they are at discord. Verily he makes his offspring in accord in order of seniority; the younger does not overstep the older. He should draw the cup for Indra and Vayu first for one who is ill. For he who is ill is separated from breath, the cup for Indra and Vayu is breath; verily he unites him with breath. They should draw the cup for Mitra and Varuna first if when they are consecrated one die [1].