Hand part of ball

[Jurassic Referee]

Originally Posted by BillyMac

It is legal use of hands to accidentally hit the hand of the opponent when it is in contact with the ball. This includes holding, dribbling, passing, or even during a shot attempt. Striking a ball handler or a shooter on that player's hand that is incidental to an attempt to play the ball is not a foul, no matter how loud it sounds or how much it hurts.

And the key word is "accidentally". It is a judgment call though.

Personally, not being able to read minds, I can't ever be 100% sure if a defender deliberately whacked an offensive player on the hand while that hand was on the ball. And seeing that I was taught very early not to call anything that I wasn't really sure of, I give the benefit of the doubt to the defender.

And in my experience, that's the way that the play is generally/universally called also.