US-P17.069ab ।US-P17.069cd ॥
In plain words
Nothing outside, nothing in between, nothing inside — nowhere at all is there anything other than yourself. Śruti says it flatly: no outer, no inner, not a single thing. So what you are is pure, and shines by its own light.
Close to the Sanskrit
Nothing other than the Self is found anywhere — neither outer, nor in the middle, nor inner; because of the śruti '[Brahman is] without outside and without inside', not anything [is found]. Therefore [the Self is] pure, self-luminous.