Leviticus 27:26
Redemption of the Firstborn
27:26 “‘Surely no man may consecrate a firstborn that already belongs to the Lord as a firstborn among the animals; whether it is an ox or a sheep, it belongs to the Lord.
Leviticus 7:10
7:10 Every grain offering, whether mixed with olive oil or dry, belongs to all the sons of Aaron, each one alike.