मत्तो नान्यत्किञ्चिदत्रास्ति विश्वंसत्यं बाह्यं वस्तु मायोपक्लृप्तम् ।आदर्शान्तर्भासमानस्य तुल्यंमय्यद्वैते भाति तस्माच्छिवोऽहम् ॥ ५ ॥
In plain words
There is nothing here that is not me. The universe is no real thing standing outside — māyā put it together. Like an image showing up inside a mirror, it shines in me, in whom there is no second. So: I am Śiva.
Close to the Sanskrit
Other than me there is not anything whatsoever here; the universe is not a real external thing — it is contrived by māyā. Equal to that which appears inside a mirror, it shines in me, the non-dual. Therefore I am Śiva.