BG 6.18
यदा विनियतं चित्तमात्मन्येवावतिष्ठते
निःस्पृहः सर्वकामेभ्यो युक्त इत्युच्यते तदा
yadā viniyataṃ cittamātmanyevāvatiṣṭhate
niḥspṛhaḥ sarvakāmebhyo yukta ityucyate tadā
TRANSLATION
When the subdued mind rests on the self alone, then, free of all yearning for objects of desire, one is said to be fit for Yoga.
PURPORT
When the mind which usually goes after sense enjoyments, abandons such desires and ‘rests on the self alone,’ i.e., becomes well-settled on account of discerning unsurpassable good in the self alone and rests there alone steadily, without movement—then, being ‘free of yearning for all desires,’ one is said to be integrated. He is said to be fit for Yoga.