A river flows with great force, carrying silt and debris. But when it enters the ocean, everything it carried merges into something far vaster. Krishna says the same happens to karma. For the one who is free from attachment, liberated, with mind steady in knowledge, and who performs every action as an offering — all karma dissolves completely.
The word 'yajna' here means more than a fire ritual. It means the spirit of offering — doing your work as something given, not something grasped. When action is performed in this spirit, it leaves no residue, no bondage, no trace.