Cross reference
Leviticus 7:15
15 And the flesh of the sacrifice of his peace offerings for thanksgiving shall be eaten the same day that it is offered; he shall not leave any of it until the morning.
Leviticus 22:29-30
29 And when ye will offer a sacrifice of thanksgiving unto the LORD, offer it at your own will.
30 On the same day it shall be eaten up; ye shall leave none of it until the morrow: I am the LORD.