"12.16 GOALKEEPER POSSESSION OF THE BALL
The goalkeeper is considered to be in control of the ball when the ball is held with both hands, held by trapping the ball between one hand and any surface (e.g., the ground, a goalpost, the goalkeeper’s body), or holding the ball in the outstretched open palm. Once established, possession is maintained, when the ball is held as described above, while bouncing the ball on the ground or throwing it into the air. Possession is given up if, after throwing the ball into the air, it is allowed to hit the ground. For purposes of determining goalkeeper possession, the “handling” includes contact with any part of the goalkeeper’s arm from the fingertips to the shoulder."