An analogy of dedication is that a person, unwilling to keep the food just for self consumption, shares with others. Does this mean one’s virtuous karma is reduced after dedication, the same way one only keeps a dollar after sharing ten dollars with nine other people? The root of virtue is not at all like that. The more it is dedicated, the more it grows; the more it is kept for oneself, the more likely it decreases. This aspect of the root of virtue is just the opposite of that of worldly things. Thus, never forget to dedicate.

- Quote from The Right View, "The Three Supreme Methods"