Bava Metzia 6: The Burden of Proof

What if one complainant grabbed more of the disputed object before the judges? It depends, to some degree, on the reaction of the other party. What if they are making other claims of ownership before the court? Can one be considered an owner if the item is not in that party's possession? The answer is no, the burden of proof falls on the one who can't lay physical claim. But what happens if one party consecrates the item? As it happens, one party consecrated a bathhouse, which led the sages to bathe elsewhere, lest they violate consecrated property. But that's a difficult conclusion, practically speaking, so they tried to get a better answer, exploring the question of a possible bekhor - first born.