how can someone forget to take 100$ from the ATM?

and let's say he didn't pay attention enough to realize there was still a 100$... ya3ne lama byef2eda, he won't think about the possibility of him leaving it their... he would probably think he lost it somewhere...
so bottom line, he will never go back to the bank to claim it

and if i give it to the bank, knowing that the guy will not come back.... then this would mean that the bank ra7 y7otta bjaybto!
in that case better my jaybe than the banks!!