And he shall cause the house to be scraped within round about, and they shall pour out the dust that they scrape off without the city into an unclean place:
Leviticus 17:13
And whatsoever man there be of the children of Israel, or of the strangers that sojourn among you, which hunteth and catcheth any beast or fowl that may be eaten; he shall even pour out the blood thereof, and cover it with dust.