Defilement of Priests
Source: Nav
Leviticus 16:26, 28
The man who released the goat as the scapegoat must wash his clothes and bathe himself with water; afterward he may reenter the camp. / The one who burns them must wash his clothes and bathe himself with water, and afterward he may reenter the camp.
Numbers 19:7–10
Then the priest must wash his clothes and bathe his body in water; after that he may enter the camp, but he will be ceremonially unclean until evening. / The one who burned the heifer must also wash his clothes and bathe his body in water, and he too will be ceremonially unclean until evening. / Then a man who is ceremonially clean is to gather up the ashes of the heifer and store them in a ceremonially clean place outside the camp. They must be kept by the congregation of Israel for preparing the water of purification; this is for purification from sin.
Ezekiel 44:25, 26
A priest must not defile himself by going near a dead person. However, for a father, a mother, a son, a daughter, a brother, or an unmarried sister, he may do so, / and after he is cleansed, he must count off seven days for himself.