Leviticus 4:2-5

2“Tell the Israelites, ‘When a person sins by straying unintentionally from any of the Lord’s commandments which must not be violated, and violates any one of them –

3“‘If the high priest sins so that the people are guilty, on account of the sin he has committed he must present a flawless young bull to the Lord for a sin offering.

4He must bring the bull to the entrance of the Meeting Tent before the Lord, lay his hand on the head of the bull, and slaughter the bull before the Lord.

5Then that high priest must take some of the blood of the bull and bring it to the Meeting Tent.