आत्मतत्त्वैकनिष्ठस्य हर्षामर्षवशं मनः ।यस्य नायात्यसक्तोऽसौ जीवन्मुक्तः स कथ्यते
In plain words
One solely devoted to the truth of the Self, whose mind never comes under the sway of joy or resentment -- he, unattached, is called liberated while living.