a) A minor penalty shall be imposed on any player who shall place his stick, leg, foot, arm, hand or elbow in such a
manner that it shall cause his opponent to trip or fall.

  (Note 1) If, in the opinion of the Referee, a player is unquestionably hook-checking the puck and obtains
possession of it, thereby tripping the puck carrier, no penalty shall be imposed.
  (Note 2) Accidental trips which occur simultaneously with or after a stoppage of play will not be penalized.

Any player who deliberately leaves his feet and contacts an opponent with any part of his body thereby causing the opponent to trip or fall shall be assessed a minor penalty(Clipping).

  (Note 3) This rule does not apply to a player who has dropped to his knee(s) to block a shot.