Priests: Special Laws Respecting: While Unclean Could not Perform Any Service
Source: TTT
Leviticus 22:1, 2
Then the LORD said to Moses, / “Tell Aaron and his sons to treat with respect the sacred offerings that the Israelites have consecrated to Me, so that they do not profane My holy name. I am the LORD.
Numbers 19:6, 7
The priest is to take cedar wood, hyssop, and scarlet wool and throw them onto the burning heifer. / 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.