Every action we perform, accrues karma. Logged and timestamped in an invisible journal in an unknown medium. What we sow, so we reap. Maybe in this life, maybe in another.
We may not get it back the exact same way. Just like we may never get back the very same 100$ bill that we once deposited, from an ATM machine. But we will surely get 100$.
Vedanta teaches us that a liberated soul accrues no karma.
So what then, happens to the karma from his actions, if it doesn’t go to him?
The wise say that the good karma goes to such a person’s followers and disciples. While the bad karma goes to his naysayers.
How do we use this information? Well, we know appearances can be deceptive. So we may never know who is at what stage of spiritual evolution.
It would hence be prudent (and practical) to avoid being judgemental, argumentative or resentful, of anybody.
We are barely surviving our own bad karma. Why take on additional burden?