The gemara extrapolates the verses at the beginning of sefer devarim when Moshe discusses setting up the court system. The gemara learns from here all sorts of laws relating to judges to ensure fair judgments (not showing favoritism, etc. and that the people listen to the courts (implements used by judges for enforcement purposes). The gemara now goes back to the mishna. double payment is in a court of three. Since it is a payment of a fine, can it be judged by one specialist as in theft and injuries? The debate regarding one who accuses his wife about not being a virgin is disucssed – what is at the root of the debate? A number of explanations are given, most of them narrowing the focus of the debate to more specific cases.