The thanksgiving offering is unique because the meat of the animal must be consumed by the worshipper (and presumably his family) on the day of sacrifice. This is the same statute for the three major Israelite festival days: Passover, the Feast of Weeks, and the Feast of Tabernacles (Exodus 23:14–18; Exodus 34:25; Deuteronomy 16:4).
15 La chair du sacrifice de reconnaissance et d'actions de grâces sera mangée le jour où il est offert; on n'en laissera rien jusqu'au matin.