Daily Reading: Bhagvad Gita As it is- Page-116

Bg 3.17

yas tv ātma-ratir eva syād
ātma-tṛptaś ca mānavaḥ
ātmany eva ca santuṣṭas
tasya kāryaṁ na vidyate

Translation: 

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 satiated – for him there is no duty.

Purport: 

A person who is fully Kṛṣṇa conscious, and is fully satisfied by his acts in Kṛṣṇa consciousness, no longer has any duty to perform. Due to his being Kṛṣṇa conscious, all impiety within is instantly cleansed, an effect of many, many thousands of yajña performances. By such clearing of consciousness, one becomes fully confident of his eternal position in relationship with the Supreme. His duty thus becomes self-illuminated by the grace of the Lord, and therefore he no longer has any obligations to the Vedic injunctions. Such a Kṛṣṇa conscious person is no longer interested in material activities and no longer takes pleasure in material arrangements like wine, women and similar infatuations.

Bg 3.18

naiva tasya kṛtenārtho
nākṛteneha kaścana
na cāsya sarva-bhūteṣu
kaścid artha-vyapāśrayaḥ

Translation: 

A self-realized man has no purpose to fulfill in the discharge of his prescribed duties, nor has he any reason not to perform such work. Nor has he any need to depend on any other living being.

Purport: 

A self-realized man is no longer obliged to perform any prescribed duty, save and except activities in Kṛṣṇa consciousness. Kṛṣṇa consciousness is not inactivity either, as will be explained in the following verses. A Kṛṣṇa conscious man does not take shelter of any person – man or demigod. Whatever he does in Kṛṣṇa consciousness is sufficient in the discharge of his obligation.