qa.tsa describes scraping the inside of a house and removing the material scraped away.

The attested use describes scraping the inside of a house around its interior, with the scraped-off dust then taken outside the city in Leviticus 14:41.

1. Scraping a house’s interior surface · dominant

   In Leviticus 14:41, the Hiphil imperfect form occurs in the instruction to scrape the house “on the inside all around”; the APB then describes pouring the scraped-off dust outside the city.

   Leviticus 14:41

In the Anselm Project Bible: In Leviticus 14:41, the APB renders the action as “scrape the house on the inside all around” and refers to “the scraped-off dust.” The verse is read as a whole.