Leviticus 22:4
"What man soever of the seed of Aaron is a leper, or hath a running issue; he shall not eat of the holy things, until he be clean. And whoso toucheth any thing that is unclean by the dead, or a man whose seed goeth from him;"
Cross References (ranked by relevance)
And if any beast, of which ye may eat, die; he that toucheth the carcase thereof shall be unclean until the even.
He shall eat the bread of his God, both of the most holy, and of the holy.
And the remnant of the meat offering shall be Aaron’s and his sons’: it is a thing most holy of the offerings of the LORD made by fire.
And that which is left of the meat offering shall be Aaron’s and his sons’: it is a thing most holy of the offerings of the LORD made by fire.
All the heave offerings of the holy things, which the children of Israel offer unto the LORD, have I given thee, and thy sons and thy daughters with thee, by a statute for ever: it is a covenant of salt for ever before the LORD unto thee and to thy seed with thee.
This shall be thine of the most holy things, reserved from the fire: every oblation of theirs, every meat offering of theirs, and every sin offering of theirs, and every trespass offering of theirs which they shall render unto me, shall be most holy for thee and for thy sons.
And the LORD said unto Moses, Speak unto the priests the sons of Aaron, and say unto them, There shall none be defiled for the dead among his people: