Taittiriyabrahmana 3.10.9.12

3.10.9.12

sárvaṃ bata gautamó veda /
yáḥ sāvitráṃ véda_íti /
sá ha_uvāca /
kā́_éṣā́ vā́g asī́ti /
ayám ahám̐ sāvitráḥ /
devā́nām uttamó lokáḥ /
gúhyaṃ máho bíbhrad íti /
etā́vati ha gautamáḥ /
yajñopavītáṃ kṛtvā́_adhó nípapāta /
námo náma íti /

"Indeed, the Gautama knows everything,
he who knows the Sāvitra!"
He said:
"What voice are you?"
"This am I, the Sāvitra,
the highest world of the gods,
bearing secret greatness."
At this, the Gautama,
putting on the sacred thread, fell down low [saying]:
"Homage, homage!"