Kena Upanishad 3.4-2

3.4-2

tathā astu iti tad yakṣam abhi adravat tatprati gatavānagniḥ| taṃ ca gatavantaṃ pipṛcchiṣuṃ tatsamīpe'pragalbhatvāttūṣṇībhūtaṃ tadyakṣam abhyavadad agniṃ prati abhāṣata ko'sīti| evaṃ brahmaṇā pṛṣṭo'gniḥ abravīt--agnirvā agnināmāhaṃ prasiddho jātavedā iti ca nāmadvayena prasiddhatayātmānaṃ ślāghayanniti ||

Saying, "Tathā, so be it", iti, this much; Fire tat, towards that Yakṣa; adrāvat, approached; Fire moved towards It. Tam, to him, to Fire, who had approached and was desirous of asking, but had become silent because of absence of arrogance in Its presence, the Yakṣa, abhyavadat, said; "Kaḥ asi iti, who are you?" Thus being asked by Brahman, Fire said, "Agniḥ vai, I am Fire (agni) by name, and am also familiarly known as Jātavedā", showing thereby his self-importance consisting in his being well known through the two names.