yo 'ntaḥ-sukho 'ntar-ārāmas
tathāntar-jyotir eva yaḥ
sa yogī brahma-nirvāṇaṁ
brahma-bhūto 'dhigacchati
yaḥone who; antaḥ-sukhaḥhappy from within; antaḥ-ārāmahactive within; tathāas well as; antaḥ-jyotiḥaiming within; evacertainly; yaḥanyone; saḥhe; yogīmystic; brahma-nirvāṇamliberated in the Supreme; brahma-bhūtaḥself-realized; adhigacchatiattains.
One whose happiness is within, who is active within, who rejoices within and is illumined within, is actually the perfect mystic. He is liberated in the Supreme, and ultimately he attains the Supreme.
Unless one is able to relish happiness from within, how can one retire from the external engagements meant for deriving superficial happiness? A liberated person enjoys happiness by factual experience. He can, therefore, sit silently at any place and enjoy the activities of life from within. Such a liberated person no longer desires external material happiness. This state is called brahma-bhūta, attaining which one is assured of going back to Godhead, back to home.

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