Commentors requested that you provide a source for the bolded section because the way you phrased the statement implies that it is a fact (when in actual fact, the books don't say thisthis; they do say that the familiar "always obeys your commands" though). This is not a matter of rules, but of accuracy. As pointed out in a comment:
You say yourself that you have not memorized the rules, and, in fact, in previous answers you've stated things in your answer that are factually incorrect (potentially even including your statement about familiars) and had you had access to the rules and looked it up would have avoided a mistake.