Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 4.p10

4.p10

iv. 8. Next as to the Vasiṣṭha sacrifice. He who means to proceed with the Vasiṣṭha sacrifice begins on the new moon in the Phalgunis (thinking) ‘The full moon night is the holy power; the new moon night is the lordly power; this sacrifice is, as it were, the lordly power. By means of the lordly power let me overcome my foes.’ Vasiṣṭha desired, when his sons were slain, ‘May I be propagated with offspring, with cattle, may I overcome the Saudāsas.’ He saw this sacrificial rite, the Vasiṣṭha sacrifice; he grasped it and sacrificed with it; having sacrificed with it, he was propagated with offspring, with cattle; he overcame the Saudāsas. Verily thus also the sacrificer, in that he sacrifices with the Vasiṣṭha sacrifice, is propagated with offspring, with cattle; he overcomes the rivals who hate him.