The ruling on the field is a fumble.
Item 1. Forward Movement of Hand
When a player is in control of the ball and is attempting to pass it forward, any intentional forward movement of his hand starts a forward pass.
If, after intentional forward movement of his hand, contact by an opponent materially affects the passer, causing the ball to go backward, it is a forward pass, regardless of where the ball strikes the ground, a player, an official, or anything else.
If, after an intentional forward movement of his hand, the passer loses possession of the ball during an attempt to bring it back toward his body, it is a fumble.
If the passer loses possession of the ball while attempting to re-cock his arm, it is a fumble.
The ruling on the field is a touchdown.
It is a Touchdown if any part of the ball is on, above, or behind the opponent’s goal line while legally in possession of an inbounds player, provided it is not a touchback.
The ruling on the field is a completed catch.
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:
secures control of the ball in his hands or arms prior to the ball touching the ground; and
touches the ground inbounds with both feet or with any part of his body other than his hands; and
after (a) and (b) have been fulfilled, performs any act common to the game (e.g., tuck the ball away, extend it forward, take an additional step, turn upfield, or avoid or ward off an opponent), or he maintains control of the ball long enough to do so.