Srimad Bhagavat Gita commentary chapter 6 verse 22

Chapter 6 verse 22

“Which having obtained, he thinks there is no other gain superior to it; wherein established, he is not moved even by heavy sorrow”

Once the person attains the state of eternal bliss and becomes a yogi and in nirvikalpa Samadhi, there is nothing else to attain and pair of opposites do not affect that person- neither heavy sorrow or huge gains, suffering or elation, heat and cold etc., This is the reason why it is said that once a person reaches the state of Jivan mukta, any action performed does that attach to them since they don’t associate themselves to that action. The doer ship is completely dropped.