Leviticus 4:2-3

2“Speak to the children of Israel, saying: ‘If a person sins unintentionally against any of the commandments of the Lord in anything which ought not to be done, and does any of them,

3if the anointed priest sins, bringing guilt on the people, then let him offer to the Lord for his sin which he has sinned a young bull without blemish as a sin offering.