Leviticus 7:19

19Flesh that touches any unclean thing shall not be eaten. It shall be burned up with fire. All who are clean may eat flesh,

Haggai 2:13

13Then Haggai said, aIf someone who is unclean by contact with a dead body btouches any of these, does it become unclean?” The priests answered and said, “It does become unclean.”
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