travelling question

[mchimpy]

Can anyone verify whether the following is a travelling violation? Offensive player with the ball comes to a two-footed jump stop upon catching a pass. The offensive player jumps to attempt a shot. While offensive player is in the air, defensive players slaps the ball downward out of offensive players hands. Before landing and before the ball touches the ground, the offensive player regains possession of the ball and lands. Is this travelling?