'And as here on earth, whatever has been acquired by exertion, perishes, so perishes whatever is acquired for the next world by sacrifices and other good actions performed on earth. Those who depart from hence without having discovered the Self and those true desires, for them there is no freedom in all the worlds. But those who depart from hence, after having discovered the Self and those true desires, for them there is freedom in all the worlds.

In plain words: Everything gained by hard work on earth eventually disappears. In the same way, rewards in the next life earned through rituals and good deeds also run out. People who die without finding the true Self and its true desires are not free anywhere. Those who find them are free in all worlds.