Krishna speaks12.16

अनपेक्षः शुचिर्दक्ष उदासीनो गतव्यथः।सर्वारम्भपरित्यागी यो मद्भक्तः स मे प्रियः॥

anapekṣaḥ śucir dakṣa udāsīno gata-vyathaḥsarvārambha-parityāgī yo mad-bhaktaḥ sa me priyaḥ

Word by word
anapekṣaḥ — indifferent to worldly gainśuciḥ — puredakṣaḥ — skillfuludāsīnaḥ — without caresgata-vyathaḥ — untroubledsarva-ārambha — of all undertakingsparityāgī — renouncersaḥ — whomat-bhaktaḥ — my devoteesaḥ — heme — to nepriyaḥ — very dear

The verse says

Wanting nothing for himself, clean, capable, uninvolved, untroubled, having given up every undertaking — that devotee of mine is dear to me.

In plain words

Dakṣa — capable, skilful, good at things. That is on the list.

This is not a description of somebody who has withdrawn from competence.

And beside it udāsīna — sitting apart, uninvolved. The same word Chapter 9 used of Krishna himself, with its small word attached: as if.

Where you've felt this · at work

The man who fixes the lift in your building arrives, finds the fault in ten minutes, fixes it, and leaves without telling anybody how difficult it was. He is not indifferent to the work. He is indifferent to being seen to have done it well.

Going deeper

Capability and detachment are placed side by side, and the pairing rules out a common misreading of this whole book.

Dakṣa means good at what you do. It would have been easy to leave it out of a list about non-attachment, and leaving it out would have produced the familiar picture of the spiritual person as someone faintly incompetent at ordinary life. The verse refuses that.

The last item needs care. Giving up every undertaking does not mean doing nothing — dakṣa three words earlier would make no sense.

It means not starting things in order to become somebody. Most undertakings carry a second, unstated project underneath the first one: the version of yourself that will exist once this is done. That is what is being set down, and the work itself continues.