What does if you put nothing in your purse you take nothing out mean?

The phrase "if you put nothing in your purse, you take nothing out" suggests that if you don't invest time, effort, or resources into something, you shouldn't expect to gain any benefits or rewards from it. It emphasizes the importance of contributing or participating in order to receive returns. Essentially, it highlights the principle of reciprocity in various aspects of life, including personal relationships, work, and financial matters.