Maitri (Maitrāyaṇīya) Upaniṣad 7.2

7.2

indrastriṣṭup pañcadaśo bṛhadgrīṣmo vyānaḥ somo rudrā dakṣiṇata udyanti tapanti varṣanti stuvanti punarviśanti antarvivareṇa īkṣanti anādyanto'parimito'paricchinno'paraprayojyaḥ svatantro'liṅgo'mūrto'nantaśaktirdhātā bhāskaraḥ ||

2. Indra, the Trishṭubh meter, the Pañcadaśa hymn, the Bṛihad chant, the summer season, the Vyāna breath, the moon, the Rudra gods, issue forth to the south. They shine, they rain, they praise, they enter again within and peer through an opening.

He is without beginning or end, unmeasured, unlimited, not to be moved by another, independent, devoid of marks, formless, of endless power, the creator, the enlightener.