4.23 गतसङ्गस्य one who is devoid of attachment, मुक्तस्य of the liberated, ज्ञानावस्थितचेतसः whose mind is established in knowledge, यज्ञाय for sacrifice, आचरतः acting, कर्म action, समग्रम् whole, प्रविलीयते is dissolved.

Commentary:
One who is free from attachment, who is liberated from the bonds of Karma, whose mind is centred and rooted in wisdom, who performs actions for the sake of sacrifice, in order to please the Lord -- all his actions with their results melt away. His actions are reduced to nothing. They are, in fact, no actions at all.