। ॥ २६७ ॥
In plain words
Hidden in the cave of the intellect dwells Brahman — real, supreme, without a second, beyond the ordinary categories of existing and not existing. Whoever comes to live there, identified as That itself, never again has to enter the cave of a body. There is no more coming back.
Close to the Sanskrit
In the cave of the intellect there exists Brahman, distinct from both being and non-being, real, supreme, without a second. Whoever, with that very identity, dwells here in this cave — for him there is no further entry into the cave of the body.