The fruits of action are transient. Action causes one to fall into the ocean of further action. It obstructs the goal.
Comments: This is very simple. For example, if I am doing any action, there will be a demand to be rich; my son should be an officer; if it is fulfilled, I will be happy, but other problems will come; ,he would not do according to my will something like this.I can not be satisfied; then I will want another thing. This chain of karmas will go on, and what was my destination of Self-realisation will be missed. It obstructs the goal. We see that action causes one to fall into the ocean of further action.