Verse
योऽन्तःसुखोऽन्तरारामस् तथान्तर्ज्योतिरेव यः ।स योगी ब्रह्मनिर्वाणं ब्रह्मभूतोऽधिगच्छति ॥
He who has the inner happiness and inner ease and repose and the inner light, that Yogin becomes the Brahman and reaches self-extinction in the Brahman, brahmanirvāṇaṁ
Gītā 5·24