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योऽन्तःसुखोऽन्तरारामस्तथान्तर्ज्योतिरेव यः ।
स योगी ब्रह्मनिर्वाणं ब्रह्मभूतोऽधिगच्छति ॥५- २४॥

yo'ntaHsukhaो'ntaraaraamastathaantarjyotirewa yaH ।

sa yogii brahmanirwaaNaM brahmabhooto'dhigachChati ॥५- २४॥

Source: Automatic ITRANS Transliteration

Who is happy with the self, delights in the self and thence who is even illumined by the self

That yogi attains Brahma-nirvana, identification with Brahma.

Source: Milind S. Pandit

One who finds happiness with the Self, who rejoices the Self within, and who is illuminated by the Self-knowledge; such a yogi becomes one with Brahman and attains supreme nirvana.

Source: The Bhagavad-Gita: The Sacred Song

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.

Source: Bhagavad Gita As It Is