Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 23.3.33

23.3.33

anuṣṭubham chanda ekaviṃśam stomam vairājam sāma /

[They obtain] the Anuṣṭubh metre, the twenty-onefold stoma, and the Vairāja sāman;