Leviticus 1:13

1:13 Then the one presenting the offering must wash the entrails and the legs in water, and the priest must present all of it and offer it up in smoke on the altar – it is a burnt offering, a gift of a soothing aroma to the Lord.

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.