Leviticus 7:15-18

¹⁵The meat of the sacrifice of your peace offering of thanksgiving must be eaten the same day you offer it. Don't leave any of it until the morning.

¹⁶If the sacrifice you're offering is to pay a vow or a freewill offering, it shall be eaten on the day you present your sacrifice, but what's left can be eaten the next day.

¹⁷However, any meat of the sacrifice still remaining on the third day must be burned.

¹⁸If you eat any of the meat from your peace offering on the third day, it won't be accepted. You won't receive credit for offering it. In fact it will be treated as something disgusting, and anyone who eats it will bear responsibility for their guilt.