Chāndogya Upaniṣad 7.24.1

7.24.1

yatra nānyat paśyati nānyac chṛṇoti nānyad vijānāti sa bhūmā \
atha yatrānyat paśyaty anyac chṛṇoty anyad vijānāti tad alpam \
yo vai bhūmā tad amṛtam \
atha yad alpaṃ tan martyam (S ) \
sa bhagavaḥ kasmin pratiṣṭhita iti \
sve mahimni yadi vā na mahimnīti \\724.1\

1. ‘Where one sees nothing else, hears nothing else, understands nothing else—that is a Plenum. But where one sees something else—that is the small. Verily, the Plenum is the same as the immortal; but the small is the same as the mortal.’

‘That Plenum, Sir—on what is it established?’

‘On its own greatness—unless, indeed, not on greatness at all.