Bhagavad Gita
6.18

यदा विनियतं चित्तमात्मन्येवावतिष्ठते । निःस्पृहः सर्वकामेभ्यो युक्त इत्युच्यते तदा ॥

yadā viniyataṃ cittamātmanyevāvatiṣṭhate | nihspṛhaḥ sarvakāmebhyo yukta ityucyate tadā ||

Translation

When the perfectly controlled mind rests in the Self alone, free from longing for all objects of desire — then it is said to be established in yoga.

Interpretation

The sign that meditation has reached its deepest fruit: the mind (chitta) has been thoroughly controlled (viniyata) and rests in the Self (Atman) — not in any thought, not in any object, not even in any spiritual concept, but in pure Self. And simultaneously, all desires for external objects have naturally fallen away — not suppressed through effort but spontaneously absent because the Self itself is supremely satisfying. This is the state called yukta — fully established, fully arrived.