Leviticus 16:23

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.

Leviticus 16:4

16:4 He must put on a holy linen tunic, linen leggings are to cover his body, and he is to wrap himself with a linen sash and wrap his head with a linen turban. They are holy garments, so he must bathe his body in water and put them on.