131. Each of the following acts constitutes a foul:(1) attacking an opponent while holding the ropes or using the ropes to attack;
(2) crouching below the level of an opponent’s belt in a manner that is dangerous to the opponent;
(3) butting with the head;
(4) ignoring the referee’s instructions;
(5) attempting to strike an opponent immediately after the referee has ordered “Break!” and before stepping back;
(6) attacking the referee or behaving aggressively towards him;
(7) hitting an opponent below the belt;
(8) hitting an opponent while he is down or is getting up or after the bell has sounded;
(9) holding an opponent with one hand, while hitting him with the other;
(10) deliberately holding an opponent to maintain a clinch;
(11) wrestling with an opponent;
(12) pushing an opponent about the ring or into the ropes;
(13) hitting an opponent with any part of the body other than the fists;
(14) hitting an opponent with an open glove, with the inside of the hand or with the wrist, or giving any backhand blow;
(15) deliberately touching the ring mat without having been hit;
(16) deliberately hitting an opponent in the back or kidney area or hitting the back of the neck or head. A blow to the head behind the ear or on the side of the neck when an opponent turns his head to avoid the blow does not constitute a foul;
(17) doing a complete turn before hitting;
(18) using crude or inappropriate language in the ring;
(19) rubbing the laces of a glove against an opponent’s face;
(20) indulging in any unsportsmanlike conduct or any conduct that could be detrimental to the good name of boxing;
(21) refusing to fight;
(22) striking an opponent’s eye with the thumb; and
(23) not resuming the bout immediately after the minute of rest.