hand is part of the ball - clarification

[theboys]

What I see missed most often is the defender hitting the shooter's elbow. The contact isn't severe, but it causes the shot to fall short.

[bob jenkins]

Originally posted by xxssmen
This is where knowing the rule is one thing and applying the rule is another.
The book say that any contact mad on a shooter while airborne is a foul in other word protect the shooter.

Reference, please.