Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 26.2.5_3

26.2.5_3

ta u ha tūṣṇīm āsus teṣām alīkayur vācaspato brahmā āsa sa ha uvāca na aham etad veda hanta pūrveṣām ācāryam sthaviram jātūkarṇyam pṛchāni iti / (soma: chandomāh)

And they remained silent. Alīkayu Vācaspata was their brahman priest. He said: "I do not know this; come, let me ask the elder teacher of our ancestors, Jātūkarṇya."