The Throw-in.
5. When the ball is in touch, a player of the opposite side to that which played it out shall throw it in from the point on the touch line where it left the field of play. The player throwing the ball must stand on the touch line facing the field of play, and shall throw the ball in over his head with both hands in any direction, and it shall be in play when thrown in. A goal shall not be scored from a throw-in, and the thrower shall not again play until the ball has been played by another player.
(This law is complied with if the player has any part of both feet on the line when he throws the ball in.)