यदा हि नेन्द्रियार्थेषु न कर्मस्वनुषज्जते।सर्वसङ्कल्पसंन्यासी योगारूढस्तदोच्यते॥
yadā hi nendriyārtheṣu na karmasv-anuṣajjatesarva-saṅkalpa-sannyāsī yogārūḍhas tadocyate
Word by word
The verse says
When he is not attached to the objects of the senses or to actions, having set down every plan — then he is said to have climbed.
In plain words
A definition, offered so the last verse can be used.
Not attached to things. Not attached to doing. Every plan set down.
It is a high bar, and it is stated plainly rather than softened.
Where you've felt this · in creative work
You know a piece of work is finished when you stop wanting to show it to anybody. Not because you are proud of it. Because the wanting has gone quiet, and you can see the thing plainly for the first time.
Going deeper
The definition is strict, and the strictness is doing something useful rather than discouraging.
All three conditions have to hold at once: no attachment to the objects of the senses, none to action, and every plan set down. The last chapter's people who had let go of results are not yet described this way.
So the honest consequence is that most readers, most of the time, are on the climbing side of 6.3. That is not a failure. It is the ordinary case, and the instruction for it is already known.
Sarva-saṅkalpa-saṁnyāsī — one who has renounced all plans. Not some. The word is doing the same work it did in the verse before, and it is the pivot of the whole state.
Which puts the whole chapter's meditation instructions in their place. They are for the climb, and the climb is what almost everybody is doing.