YV 4.7e

Those who knowing thus perform (the rite of) these thirty-two (nights)--the Anustubh has thirty-two syllables, Prajapati is connected with the Anustubh-gaining Prajapati by his own metre, go to prosperity [1], for the world of heaven for man is prosperity. These (nights) are thirty-two, the Anustubh has thirty-two syllables, the Anustubh is speech; verily they gain all speech; all become speakers of speech, for all attain prosperity. There are the three days, Jyotis, Go, and Ayus. The Jyotis is this (earth), the Go the atmosphere, and the Ayus yonder (sky); verily they mount upon these worlds. The three days occur in order; verily in order do they mount upon the world of heaven. They proceed with the Brhat and Rathantara (Samans) [2]. The Rathantara is this (earth), the Brhat yonder (sky); verily with them do they proceed; verily also in them they find support. These indeed are the quick paths of the sacrifice; verily by them do they proceed to the world of heaven. Those who perform the three days in succession mount upon the world of heaven turning away (from earth). There is a three day period reversed, for returning (from heaven), and also for support. Having prospered in both worlds they cease (the rite). These (nights) are thirty-two. As for thirty of them, the Viraj has thirty syllables, the Viraj is food; verily by the Viraj they win food. As for the (remaining) two, they are days and nights, and by both forms they go to the world of heaven. There are Atiratras on either side, for security. There are two Sattras of the gods, that of twelve days and that of thirty-three days. Those, who knowing thus perform (the rite of) thirty-three days, mount openly upon the deities. As a great man who has reached (the goal) seeks (more), so he does. If he fail he becomes worse; if he fail not, he remains the same. Those, who knowing thus perform (the rite of) thirty-three days, are distinguished from the evil enemy.