(a)
When the scrum is set, the scrum half not throwing the ball into the scrum must take up a position either at the same side of the scrum as the scrum half throwing in the ball or behind the offside line defined for other players.
(b) Offside for scrum-halves. When a team has won the ball in a scrum, the scrum half of that team is offside if both feet are in front of the ball while it is still in the scrum. If the scrum half has only one foot in front of the ball, the scrum half is not offside.
Sanction: Penalty kick
Scrum offside
(c)
When a team has won the ball in a scrum, the scrum half of the opposing team is offside if that scrum half steps in front of the ball with either foot while the ball is still in the scrum. This scrum-half may not move into the space between the flanker and No. 8 when following the ball through the scrum.
Sanction: Penalty kick
(d)
The scrum half whose team does not win possession of the ball must not move to the opposite side of the scrum and overstep the offside line. For that scrum half that runs through the hindmost foot of that player’s team in the scrum.
Sanction: Penalty kick
(e)
The scrum half whose team does not win possession of the ball must not move away from the scrum and then remain in front of the offside line. For that scrum half that runs through the hindmost foot of that player’s team in the scrum.
Sanction: Penalty kick
(f)
Any player may be scrum half, but a team can have only one scrum half at each scrum.
Sanction: Penalty kick on the offside line
(g) Offside for players not in the scrum. Players who are not in the scrum and who are not the team’s scrum half, are offside if they remain in front of their offside line or overstep the offside line which is a line parallel to the goal lines and 5 metres behind the hindmost player of each team in a scrum.
Sanction: Penalty kick on the offside line12
(h)
If the hindmost foot of a team is on or behind that team’s goal line, the offside line for scrum halves and non-participants is the goal line.
(i) Loitering. When a scrum is forming, players not taking part in it must retire to their offside line without delay. If they do not, they are loitering. Loiterers must be penalised.
Sanction: Penalty kick on the offside line