Bhagavad Gita 6.20
यत्रोपरमते चित्तं निरुद्धं योगसेवया।
यत्र चैवात्मनाऽऽत्मानं पश्यन्नात्मनि तुष्यति।।6.20।।
Yatroparamate chittam niruddham yogasevaya
Yatra chaivatmanatmanam pashyannatmani tushyati
Simple meaning, written by AIWhen the mind, restrained by the practice of yoga, becomes still, and when one sees the Self through the Self and is satisfied in the Self.