Leaving floor and starting dribble

[Shooter14]

Ok I borrowed a book from my administrator.

Rule 4-44 Art 3b says:

"After coming to a stop AND ESTABLISHING A PIVOT FOOT, If the player jumps, neither foot may be returned to the floor before the ball is released on a pass or try"

The definition of a pivot "A pivot takes place when a player who is holding the ball STEPS ONCE, or more than once, in any direction with the same foot while the other foot, called the pivot foot, is kept at its point of contact with the floor"

Again, my case is when a player catches and shoots without establishing a pivot foot. No where in the rule book can I find anything that says "both feet are the pivot" and no where in the casebook do I find this exact play. I do find similar plays in the casebook that says "A PIVOT FOOT IS ESTABLISHED" but nothing about straight up catch and shoot without establishing.

Again, I agree it's a travel, but it's impossible for me to convince my partners of that based on the ruling.

No case play in this year's case anyway, and the rule book says what I mentioned above.