Bāṣkala Upaniṣad 13

13

aham u ha pravatiṃ yajñiyām iyām ahaṃ veda bhuvanasya nābhim /
āpiḥ pitā sūr aham asya viṣvaṅṅ ahaṃ divyā āntarikṣyāstukā vaham //13//

I indeed go along the downward path worthy of sacrifice; I know the navel of the world. / I am his friend, father, and sun all around; I bear the celestial and intermediate woolly clouds. //13