(b) Bowling of high full pitched balls

(i) Any delivery, other than a slow paced one, which passes or would have passed on the full above waist height of the striker standing upright at the crease is to be deemed dangerous and unfair, whether or not it is likely to inflict physical injury on the striker.
(ii) A slow delivery which passes or would have passed on the full above shoulder height of the striker standing upright at the crease is to be deemed dangerous and unfair, whether or not it is likely to inflict physical injury on the striker.

7. Dangerous and unfair bowling – action by the umpire
(a) As soon as the umpire at the bowler’s end decides under 6(a) above that the bowling of fast short pitched balls has become dangerous and unfair, or, except as in 8 below, there is an instance of dangerous and unfair bowling as defined in 6(b) above, he shall call and signal No ball and, when the ball is dead, caution the bowler, inform the other umpire, the captain of the fielding side and the batsman of what has occured. This caution shall continue to apply throughout the innings.
(b) If there is any further instance of dangerous and unfair bowling by the same bowler in the same innings, the umpire at the bowler’s end shall repeat the above procedure and indicate to the bowler that this is a final warning. Both the above caution and final warning shall continue to apply even though the bowler may later change ends.
(c) Should there be any further repetition by the same bowler in that innings, the umpire shall
(i) call and signal No ball.
(ii) direct the captain, when the ball is dead, to take the bowler off forthwith. The over shall be completed by another bowler, who shall neither have bowled the previous over nor be allowed to bowl the next over. The bowler thus taken off shall not be allowed to bowl again in that innings.
(iii) report the occurrence to the other umpire, the batsmen and, as soon as practicable, the captain of the batting side.
(iv) report the occurrence, with the other umpire, as soon as possible to the Executive of the fielding side and to any Governing Body responsible for the match, who shall take such action as is considered appropriate against the captain and bowler concerned.