This is the lord of all (sarveśvara). This is the all-knowing (sarva-jña). This is the inner controller (antar-yāmin). This is the source (yoni) of all, for this is the origin and the end (prabhavāpyayau) of beings.

In plain words: This deep-sleep self is the lord of all, knows all, and guides everything from within. All beings come from it and return to it in the end.