הלכה על בבא קמא 205:14

And the laws of the theft as to how far he is to burden himself to return it to its owners is like that which our Rabbis, may their memory be blessed, said (Bava Kamma 103a) that one who robs the worth of a perutah from his fellow is obligated to bring it after him, even to Medea - meaning to say to a far place. But in order to lighten his burden if the expense [to do this] is great, our Rabbis, may their memory be blessed, said that he leave it with the court and they know that this money is for x, and they give it to him when he happens by.