Interesting situation

[JM_00]

Had this occur in a game over the weekend, still kinda curious about the call. I will try to be as precise as I can with the description

A1 dribbling and attacks the basket. A1 trips over B1's foot (no foul called, which was probably correct.) As A1 is falling down, he continues his dribble with one hand and is using his off hand to try to regain footing and get upright again. He is unable to do this and falls the rest of the way so that he is lying prone on court. just before he lands, he traps the ball against the court with the hand he was dribbling with. Travel was called immediately when he hit the ground.

any opinions, and or rules citations?

Thanks in advance