यदा विनियतं चित्तमात्मन्येवावतिष्ठते।निःस्पृहः सर्वकामेभ्यो युक्त इत्युच्यते तदा॥
yadā viniyataṃ cittam ātmanyevāvatiṣṭhateniḥspṛhaḥ sarva-kāmebhyo yukta ityucyate tadā
Word by word
The verse says
When the restrained mind settles into the self alone, with no longing left for anything wanted — then he is called joined.
In plain words
A definition, and it turns on one word.
Niḥspṛhaḥ — without reaching-toward. Not having resisted the things. Not longing for them.
The difference between those two is the whole chapter.
Where you've felt this · in study
You sit down to work and after a while notice you have not thought about your phone once. You did not resist it. The question of it simply never came up.
Going deeper
The state described here is the absence of a pull, not the presence of a defence, and those are easy to confuse from inside.
Resisting something means it is still operating on you at full strength and you are holding the line. That is real work and the Gita never mocks it. But it is not what this verse is naming.
Niḥspṛha — without reaching. Spṛhā is the leaning-toward, the small tilt of attention before anything has been decided. When it stops, nothing is being held back, because nothing is pushing.
That is why 2.59 was careful to say withdrawal leaves the taste behind. Withdrawal manages the pull. This is the pull ending.
And it is worth knowing the difference, because effort and its absence feel very unlike each other, and one of them can be kept up for years without ever arriving at the other.