Leviticus 6:20-22

20This is the offering of Aaron and of his sons, which they shall offer unto Yhwh in the day when he is anointed; the tenth part of an ephah of fine flour for a grain offering perpetual, half of it in the morning, and half thereof at night.

21In a pan it shall be made with oil; and when it is baken, thou shalt bring it in: and the baken pieces of the grain offering shalt thou offer for a sweet savour unto Yhwh.

22And the priest of his sons that is anointed in his stead shall offer it: it is a statute for ever unto Yhwh; it shall be wholly burnt.