Chapter 6 - Verse 18

यदा विनियतं चित्तमात्मन्येवावतिष्ठते ।
निःस्पृहः सर्वकामेभ्यो युक्त इत्युच्यते तदा ॥ १८ ॥

yadā viniyataṃ cittamātmanyevāvatiṣṭhate .
niḥspṛhaḥ sarvakāmebhyo yukta ityucyate tadā .. 18 ..


When the well-restrained thought is established in the Self only, without longing for any of the objects of desire, then he is said to be a Saint.
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Well-restrained: which attained to one-pointedness or concentration. In the Self only: having abandoned all thoughts of external objects, the thinking principle (chitta) remains steadily in the Self. Objects of desire: seen or unseen.

The simple of such a Yogin’s steadfast mind is described below :