Leviticus 14:49-52

49To purify the house the priest must take two birds, a stick of cedar, some scarlet yarn, and a hyssop branch.

50He will slaughter one of the birds over a clay pot filled with fresh water.

51He will take the cedar stick, the hyssop branch, the scarlet yarn, and the live bird, and dip them into the blood of the slaughtered bird and into the fresh water. Then he will sprinkle the house seven times.

52When the priest has purified the house in exactly this way,