Bāṣkala Upaniṣad 16

16

aham u yann apatatā rathena dviṣaḍāreṇa pradhinaikacakraḥ /
aham in nu didyutāno divedive tanvaṃ pupuṣvān amṛtaṃ vahāmi //16//

And I, proceeding in a wingless chariot with twelve spokes and a single wheel on its rim, / I indeed, shining day by day, having nourished my body, bear immortality. //16