Verse
सिद्धिं प्राप्तो यथा ब्रह्म तथाप्नोति निबोध मे ।समासेनैव कौन्तेय निष्ठा ज्ञानस्य या परा ॥
How, having attained this perfection, one thus attains to the Brahman, hear from me, O son of Kunti, – that which is the supreme concentrated direction of the knowledge.
Gītā 18·50