Foul on shot causes travel.

[Indianaref]

Originally Posted by BadNewsRef

I just had this the other night. A1 gathers for his shot, gets bumped, then drags his pivot foot before releasing the ball.

Also what about a fast break where the player gathers for the shot, takes a hard smack, then takes an extra step before releasing the shot?

SECTION 11 CONTINUOUS MOTION
ART. 1 . . . Continuous motion applies to a try or tap for field goals and free throws, but it has no significance unless there is a foul by any defensive player during the interval which begins when the habitual throwing movement starts a try or with the touching on a tap and ends when the ball is clearly in flight.
ART. 2 . . . If an opponent fouls after a player has started a try for goal, he/she is permitted to complete the customary arm movement, and if pivoting or stepping when fouled, may complete the usual foot or body movement in any activity while holding the ball. These privileges are granted only when the usual throwing motion has started before the foul occurs and before the ball is in flight.

ART. 3 . . . Continuous motion does not apply if a teammate fouls after a player has started a try for a goal and before the ball is in flight. The ball becomes dead immediately.