[PFISTO]

I was having an arguement with people at work about a player being awarded a base after a fielder catches a foul ball then falls into stands but have been unable to find any evidence except the MLB rules. They all say they have NEVER seen it happen so it can't be a valid rule. (I know argueing with morons) So I was wondering if anyone could point me in the right direction
Thanks Mike
THE Jeter and David Wright catch both happened with 2 outs