What duty do I have whenever I a) participate in a practice and b) acknowledge the rules of that practice to be fair?

When any number of persons engage in a practice, or conduct a joint undertaking according to rules, and thus restrict their liberty, those who have submitted to these restrictions when required have the right to a similar acquiescence on the part of those who have benefited by their submission. b)now if the participants in a practice accept its rules as fair, and so have no complaint to lodge against it, there arises a prima facie duty (and a corresponding prima facie right) of the parties to each other to act in accordance with the practice when it falls upon them to comply.