। ॥ २२८ ॥
In plain words
This is what is real: supreme, without a second — because there simply is nothing else beside it. In the true state of full realization of the Supreme Reality, nothing else exists at all.
Close to the Sanskrit
This is real, supreme, non-dual, because of the absence of any entity other than itself. For indeed nothing else at all exists in the excellent state of correct realization of the Supreme Truth.