Bhagavad Gita

ಕರ್ಮಜಂ ಬುದ್ಧಿಯುಕ್ತಾ ಹಿ ಫಲಂ ತ್ಯಕ್ತ್ವಾ ಮನೀಷಿಣಃ ।
ಜನ್ಮಬಂಧವಿನಿರ್ಮುಕ್ತಾಃ ಪದಂ ಗಚ್ಛಂತ್ಯನಾಮಯಮ್ ॥೫೧॥
karmajaṃ buddhiyuktā hi phalaṃ tyaktvā manīṣiṇaḥ |
janmabaṃdhavinirmuktāḥ padaṃ gacchaṃtyanāmayam ||51||

Gist of the sloka:
Gynani’s realizing the Lord, surrendering the rewards to him, removing oneself from the cycle of birth and deaths, obtains the position without blemishes.
Real seekers control their minds and win over it. They tread the path of gynana and realize Lord. They detach themselves/actions from the attachment to rewards and surrender the rewards to the Lord. They then obtain the unblemished position in mukthi.
Those who perform their duties with this sense of detachment, towards rewards, are real seekers and obtain the grace of the unblemished Lord. Therefore, one should perform their duties and not withdraw from it. A gynani too should perform his duties instead of sitting back and claiming a elevated status.
For two reasons, a gynani needs to perform his duties. One because due to his status, the populace will be looking towards him to set standards for others to follow. If he withdraws from performing his duties, so would the society. In which case the entire society is now on the path towards Hell.
Secondly, one cannot stop from performing actions. Even if he sits still, he is still performing the action of breathing, thinking, eating etc., Some of these happen even during sleep and unconscious states. As such the only time, there is no action is when he leaves the body.
Therefore, even a God realized person should continue to perform his duties always, surrendering those actions to the Lord.