Leviticus 16:23-24
The Concluding Rituals
16:23 “Aaron must then enter the Meeting Tent and take off the linen garments which he had put on when he entered the sanctuary, and leave them there.
16:24 Then he must bathe his body in water in a holy place, put on his clothes, and go out and make his burnt offering and the people’s burnt offering. So he is to make atonement on behalf of himself and the people.