जाग्रदादित्रयं यस्मिन्प्रत्यगात्मनि सत्यवत् ।स एवाहं परं ब्रह्म जाग्रदादिविलक्षणः ॥ ८२ ॥
In plain words
Waking, dream, deep sleep — the three of them look real, but only because they appear in the inner Self. That Self is what I am: Brahman, the supreme, and nothing like the three.
Close to the Sanskrit
The triad beginning with waking, which in the inner Self appears as if real — that very one am I, the supreme Brahman, distinct from waking and the rest.