। ॥ ५५४ ॥
In plain words
Whoever lets go of every reaching-out toward things, seen or unseen, and simply rests as the Self alone - he is, right then and there, Shiva himself. This is the greatest of those who know Brahman.
Close to the Sanskrit
Whoever, having abandoned all movement toward the seen and the unseen, remains as the sole Self alone - he, this best of the knowers of Brahman, is himself, directly, Shiva.