Bhagavad Gita 6.20
यत्रोपरमते चित्तं निरुद्धं योगसेवया।यत्र चैवात्मनाऽऽत्मानं पश्यन्नात्मनि तुष्यति॥
yatroparamate cittaṃ niruddhaṃ yogasevayā |yatra caivātmanā''tmānaṃ paśyannātmani tuṣyati ||
When the mind, restrained by the practice of yoga, attains quietude, and when one sees the Self by the Self, they are satisfied in their own Self.
There, where the whole of nature is seen in the light of the Self, where the person abides within their Self and is satisfied there, their functions restrained by their union with the Divine, the mind finds rest.
Our plain-language meaning of this verse is waiting for scholar review.