। ॥ २९८ ॥
In plain words
The real entity is supreme Brahman, defined as existence, consciousness, and infinity. Upon it, this universe is projected, appearing just like the false blueness we see in an empty sky.
Close to the Sanskrit
The real entity to begin with is supreme Brahman, characterized by truth, knowledge, and the rest, upon which this is superimposed, shining like blueness in the sky.