On which days is the blemished house examined during the three-week process?
Halacha 1 explains: the 7th day counts for both weeks 1 and 2, and the 13th day counts for both weeks 2 and 3. Therefore examinations are on days 7, 13, and 19 — a total of 19 days for a three-week isolation.
Question 2
After removing blemished stones, the owner wants to use stones from the other wall of his house as replacements. Is this permitted?
Halacha 3 states: he may not take stones from one side of the house and bring them to the other — Leviticus 14:42 states 'and they shall take OTHER stones,' meaning from a genuinely different source.
Question 3
A blemished house shares a wall with a neighbor. Both must remove the stones from the shared wall. Who must apply the new mortar?
Halacha 4: while both neighbors remove stones together and bring new ones together, only the blemished house's owner brings and applies the new mortar — 'and HE shall take other mortar' uses the singular form.
Question 4
A blemished house is purified with birds. Where is the blood sprinkled?
Halacha 8 states: the bird ceremony for a house differs from that for a person in this one way — for a person, blood is sprinkled on the back of his hand; for a house, blood is sprinkled seven times on the lintel from the outside.
Question 5
The blemish returns to a house after it was replastered (after stone removal). What must happen?
Halacha 2: if the blemish returns with the size of two grisim after replastering (pisyon acharei hatiach), this is definitive spreading and the entire house must be demolished — this is the final ruling for a house that cannot be saved.