Leviticus 14:47

44 Then the priest will come and see it; and if the disease in the house is increased in size, it is the leper's disease working out in the house: it is unclean.

45 And the house will have to be pulled down, the stones of it and the wood and the paste; and everything is to be taken out to an unclean place outside the town.

46 And, in addition, anyone who goes into the house at any time, while it is shut up, will be unclean till evening.

47 And anyone who has been sleeping in the house will have to have his clothing washed; and anyone who takes food in that house will have to have his clothing washed.

48 And if the priest comes in, and sees that the disease is not increased after the new paste has been put on the house, then the priest will say that the house is clean, because the disease is gone.

49 And in order to make the house clean, let him take two birds and cedar-wood and red thread and hyssop;

50 And put one of the birds to death in a vessel of earth over flowing water;