Ball touches court
 

Scenario: A1 is palming ball and loses balance and uses ball to regain balance by extending arm/ball so ball touches ground. Legal?

or steer me in the right direction in the book so I can look it up.

Legal.

It isn't a dribble if the player continues to hold the ball....so no dribbling rules apply.

It isn't a travel if the player didn't move the pivot foot and didn't touch the floor with some part of the body other than a hand or foot...the ball isn't part of the body.

Try under 4- travelling.

Or, look in the case book -- there's a case where A touches the ball to the floor.

4-44-5a: hand or foot . . .
4.15 COMMENT . . . or ball
OK

Always Listen To bob ...
 

4.15 COMMENT: It is not possible for a player to travel during a dribble. A player
is not dribbling while slapping the ball during a jump, when a pass rebounds
from his/her hand, when he/she fumbles, or when he/she bats a rebound or pass
away from other players who are attempting to get it. The player is not in control
under these conditions. It is a dribble when a player stands still and bounces the
ball. It is not a dribble when a player stands still and holds the ball and touches
it to the floor once or more than once.

Thanks For The Idea loners4me ...
 

I believe that I will add this (red above) to my list of The Most Misunderstood Basketball Rules.

Since you've been asking NBA rules...this is legal under NBA rules