The principle which precludes a person from asserting something contrary to what is implied by a previous action or statement of that person, or by a previous pertinent judicial determination, is known as...
A legal concept which forbids anybody from claiming anything or proclaiming legislation that is inconsistent with what someone stated or accepted throughout the legal facts is termed as Estoppel.
Stopping by performance precludes anybody from disputing the reality of almost any statement or reality expressed in an activity they do.