Yas tv atma-ratir eva syad
atma-trptas ca manavah
atmany eva ca santustas
tasya karyam na vidyate
(Text 17, Ch 3, Karma Yoga)
Meaning: But for one who takes pleasure in the self, whose human life is one of self-realization, and who is satisfied in the self only, fully satisfied–for him there is no duty.