Chāndogya Upaniṣad 5.15

1. Then he said to Jana: ‘Śārkarākshya! Whom do you reverence as the Ātman (Soul)?’ ‘Space indeed, Sir, O King,’ said he. ‘The Universal Ātman (Soul) is, verily, that expanded one, which you reverence as the Ātman (Soul). Therefore you are expanded with offspring and wealth.

2. You eat food; you see what is pleasing. He eats food; he sees what is pleasing. There is eminence in sacred knowledge in the family of him who reverences that Universal Ātman (Soul) thus. That, however, is only the body (_saṃdeha_) of the Ātman (Soul),’ said he. ‘Your body would have fallen to pieces, if you had not come unto me.’