For the source text click/tap here: Pesachim 97
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The Torah gives clear parameters for the animal that is to be brought as the korban Pesah. It must be a male that is one year old (see Ex12:5). What if an animal is set aside as a korban Pesah and it does not meet those basic criteria? What is left unclear in the Mishna is what is to be done with the proceeds. The Mishna appears to offer two contradictory rulings.