A man lies with part of his body inside a house and part outside. Impurity is outside hovering over his outside portion. Is the house impure?
Halacha 2: A person is hollow and their upper body height counts as a handbreadth. When impurity hovers over the outside portion, the person serves as an ohel joining the impurity to the house, making the house impure.
Question 2
An oversized cabinet is standing inside an entrance, opening outward. Impurity is inside the cabinet. Is the house impure?
Halacha 4: When an oversized cabinet opens outward and impurity is inside it, the house is pure. The impurity would exit outward (through the external opening), not inward into the house.
Question 3
Why does a nazirite not shave their hair when they contract impurity from an ohel made by a person, animal, or vessel?
Halacha 8: The Rambam explains that since a nazirite does not shave for ohel-impurity contracted through a person/animal/vessel, it proves these impurities are Rabbinic — not Scriptural. The rules apply only for terumah and kodashim purposes.
Question 4
Corpse bearers pass under an exedra. One person closes the door to protect the house. The door cannot stand on its own. Is the house protected?
Halacha 3: If the door cannot stand without human support, the person holding it has become the intervening structure. Since people (and vessels) convey impurity but cannot intervene against it, the house is impure.
Question 5
Impurity is between an oversized cabinet and the ground/wall/ceiling within a house. Is the house impure?
Halacha 6: Impurity located between the cabinet and the ground, wall, or ceiling makes the house impure — regardless of whether there is a handbreadth of airspace in that gap.