Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 18.7.10

18.7.10

tatho eva etad yajamāna etena eva tīrthena yajñam prapadyate /

the proper path of the sacrifice, named Āpnāna. That is declared in a Ṛc, ‘Who here hath proclaimed the Āpnāna passage?’ Having approached the sacrifice by this passage, they obtained all desires. Verily thus also the sacrificer by this passage having approached the sacrifice obtains all desires.