भगवद्गीता ६.१८

यदा विनियतं 

चित्तमात्मन्येवावतिष्ठते।

निःस्पृहः सर्वकामेभ्यो 

युक्त इत्युच्यते तदा ।।६.१८ ।।

पूर्णपणे ताब्यात आणलेले चित्त जेव्हा परमात्म्यात पूर्णपणे स्थिर होते, तेव्हा सर्व भोगांची इच्छा नाहीशी झालेला पुरुष योगयुक्त म्हटला जातो.

 ॥ ६-१८ ॥

वशमें किया हुआ चित्त जिस कालमें अपने स्वरूपमें ही स्थित हो जाता है और स्वयं सम्पूर्ण पदार्थोंसे निःस्पृह हो जाता है, उस कालमें वह योगी है - ऐसा कहा जाता है।

Perfectly controlled mind The mind with onepointedness.When all desires for the objects of pleasure seen or unseen die, the mind becomes very peaceful and rests steadily in the Supreme Self within. As the Yogi is perfectly harmonised, as he has attained to oneness with the Self and as he has become identical with Brahman, sense phenomena and bodily affections do not disturb him. He is conscious of his immortal, imperishable and invincible nature.Yukta means united (with the Self) or harmonised or balanced. Without union with the Self neither harmony nor balance nor Samadhi is possible. || 6.18 ||