YV 4.3j

These (offerings) also should he make [5] who desires brilliance; the minor deities are the metres, brilliance is as it were the metres; verily by the metres he bestows brilliance upon him. They are made in milk; verily he bestows brilliance upon him. He puts Dhatr in the middle; verily he places him in the middle of brilliance. Anumati is the Gayatri, Raka the Tristubh, Sinivali the Jagati, Kuhu the Anustubh, Dhatr the Vasat call. Raka is the first fortnight, Kuhu the second, Sinivali the new moon (night), Anumati the full moon (night), Dhatr the moon. The Vasus are eight [6], the Gayatri has eight syllables; the Rudras are eleven, the Tristubh has eleven syllables; the Adityas are twelve, the Jagati has twelve syllables, the Anustubh is Prajapati, the Vasat call Dhatr. Thus indeed the minor deities are all the metres and all the gods and the Vasat call. If he were to offer them all at once, they would be likely to burn him up; he should offer first two, and a third for Dhatr, and then offer likewise the last two; thus they do not burn him up, and for whatever desire they are offered that he obtains by them. iii. 4. 10. a O Vastospati, accept us; Be of kind entrance for us and free from ill; That which we seek from thee, do thou accord us, And health be thou for our bipeds, health for our quadrupeds. b O Vastospati, may we be comrades of thee In a friendship, effectual, joyful, and proceeding well; Aid our wishes in peace, in action; Do ye guard us ever with blessings. In that evening and morning he offers the Agnihotra the sacrificer thus piles up the oblation bricks [1]; the bricks of him who has established a sacred fire are the days and nights; in that he offers evening and morning, verily he obtains the days and nights, and making them into bricks piles them up.