सदा साक्षिस्वरूपत्वाच्छिव एवास्मि केवलः ।मय्येव सकलं जातं मयि सर्वं प्रतिष्ठितम् ॥ २४ ॥
In plain words
Since what I am is always the witness and nothing but the witness, I am Śiva alone — nothing else, nothing added. Everything that has come into being came into being in me. Everything that stands, stands in me.
Close to the Sanskrit
Because of always being of the nature of the witness, I am Śiva alone, the one without a second. In me alone the whole has been born; in me everything is established.