chapter 5.24

yo 'ntaḥ-sukho 'ntar-ārāmas
tathāntar-jyotir eva yaḥ
sa yogī brahma-nirvāṇaḿ
brahma-bhūto 'dhigacchati


Translation:
One whose happiness is within, who is active and rejoices from within, who is amid is inward is actually a perfect mystic. He is liberated in supreme and ultimately, he attains the supreme.

Pupport:
Unless one is able to relish happiness from within, how can one retire from external engagements meant for deriving a superficial happiness? A liberated person experiences happiness from 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 Bhuta, attaining one which is assured of going back to Godhead, back to home.