The ruling on the field is a fumble.
An official shall declare the ball dead and the down ended:
The ruling on the field is an incomplete pass.
A player who makes a catch may advance the ball. A forward pass is complete (by the offense) or intercepted (by the defense) in the field of play, at the sideline, or in the end zone if a player, who is inbounds:
The ruling on the field is that the runner is down on the 41 yard-line.
A player or an Official is Out of Bounds when he touches a boundary line, or when he touches anything that is on or outside a boundary line, except a player, an official, or a pylon.