Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 4.9.1

4.9.1

atha vasanta āgate pakveṣu veṇu yaveṣu /

iv. 13. When spring has come and the bamboo seeds are ripe, he gives orders to pluck bamboo seeds. Of this (sacrifice) there is the same time, the same model, the same deity, the same fee, the same explanation. Some perform (the offering) for Agni, or Varuṇa, or Prajāpati, but with the same model and the same explanation.