Maitrayaniya Upanishad 6.37.p1

6.37.p1

agnihotraṃ juhvāno lobhajālaṃ bhinatti ataḥ saṃmohaṃ chitvā na krodhānstunvānaḥ kāmamabhidhyāyamānastataścaturjālaṃ brahmakośaṃ bhindadataḥ paramākāśamatra hi saura saumyāgneyasātvikāni maṇḍalāni bhittvā tataḥ śuddhaḥ sattvāntarasthamacalamamṛtamacyutaṃ dhruvaṃ viṣṇusaṃjñitam sarvāparaṃ dhāma satyakāmasarvajñatvasaṃyuktam svatantram caitanyam sve mahimni tiṣṭhamānaṃ paśyati atrodāharanti ravimadhye sthitaḥ somaḥ somamadhye hutāśanaḥ |
tejomadhye sthitaṃ sattvaṃ sattvamadhye sthito'cyutaḥ ||

38. He who performs the Agnihotra sacrifice rends the net of eager desire (*lobha*).

Thence, having cut off confusion (*sammoha*), he no longer approves of anger.

Meditating upon desire, he then cuts through the fourfold sheath of Brahma.

Thence he goes to the highest ether. There, truly, having cut through the spheres of the sun, of the moon, of fire, and of Pure Being, himself being purified (śuddha), he sees the Intelligence (caitanya) which abides within Pure Being (sattva), immovable, immortal, unshaken, enduring, named Vishṇu, the ultimate abode, endowed with true desires and with omniscience, independent, which stands in its own greatness. On this point they quote:—

In the midst of the sun stands the moon (Soma);
In the midst of the moon, fire.
In the midst of fire stands Pure Being (sattva).
In the midst of Pure Being stands the Unshaken One.