6 It shall be eaten on the day you sacrifice it or on the next day; anything left over until the third day must be burned up.

Read Leviticus 19:6 Using Other Translations

It shall be eaten the same day ye offer it, and on the morrow: and if ought remain until the third day, it shall be burnt in the fire.
It shall be eaten the same day you offer it or on the day after, and anything left over until the third day shall be burned up with fire.
The sacrifice must be eaten on the same day you offer it or on the next day. Whatever is left over until the third day must be completely burned up.