Ita not bollocks at all, its not a law but its guidance on interpreting law 12 (page 125)
Handling the ball
Handling the ball involves a deliberate act of a player making contact with the ball with his hand or arm. The referee must take the following into
consideration:
• the movement of the hand towards the ball (not the ball towards the hand)
• the distance between the opponent and the ball (unexpected ball)
• the position of the hand does not necessarily mean that there is an
infringement
• touching the ball with an object held in the hand (clothing, shinguard, etc.)
counts as an infringement
• hitting the ball with a thrown object (boot, shinguard, etc.) counts as an
infringement
In yesterday case Mbemba has prevented Fellani from having a header at goal or to another Man Utd player. His arm was above his head which is an unnatural position and this its a foul and a penalty kick
Where is unnatural position mentioned in the rules or interpretation of them?