Leviticus 9:2

9:2 and said to Aaron, “Take for yourself a bull calf for a sin offering and a ram for a burnt offering, both flawless, and present them before the Lord.

Leviticus 9:4

9:4 and an ox and a ram for peace offerings to sacrifice before the Lord, and a grain offering mixed with olive oil, for today the Lord is going to appear to you.’”