He who realizes I am beyond the three bodies, I am the pure consciousness and I am Brahman is said to be a Jivanmukta.
He is said to be a Jivanmukta who realizes I am of the nature of the blissful and of the supreme bliss, and I have neither body nor any other thing except the certitude ‘I am Brahman’ only.
He is said to be a Jivanmukta who has not at all got the ‘I’ in myself, but who stays in Chinmatra (absolute consciousness) alone, whose interior is consciousness alone, who is only of the nature of Chinmatra, whose Atman is of the nature of the all-full, who has Atman left over in all, who is devoted to bliss, who is undifferentiated, who is all-full of the nature of consciousness, whose Atman is of the nature of pure consciousness, who has given up all affinities (for objects), who has unconditioned bliss, whose Atman is tranquil, who has got no other thought (than Itself) and who is devoid of the thought of the existence of anything.
Tejo Bindu Upanishad
(Source: The discussion on Jivanmukti takes place between Kumara (Muruga) and Shiva in the fourth chapter of Tejo Bindu Upanishad.)