Translation
Brothers, I am speaking according to man, even though a covenant is of a man, once it has been ratified, no one nullifies it or adds properly arranged orders to it.
Paraphrase
Dear spiritual Brothers, the following example is from human experience, but it is still helpful. Even a covenant that is made by men is such that once it has been ratified by the proper traditions, no one dares to nullify it or add any detailed and well-organized conditions to the arrangement.