What is the Torah-level method of removing chametz according to the Rambam?
The Rambam rules that Torah-level removal is nullification in the heart — considering chametz as dust and ownerless. Search and physical removal are Rabbinic enactments.
Question 2
A mouse entered a searched house with bread in its mouth — what is required?
The Rambam rules that a mouse entering with chametz requires re-searching the house, since there is clear evidence that chametz was introduced.
Question 3
Nine piles of matzah and one of chametz — a mouse took from one pile and entered a searched house. What is the ruling?
The Rambam applies the majority principle: nine piles of matzah vs. one of chametz — we presume the mouse took matzah, and no re-search is needed.
Question 4
A landlord handed the key to a tenant AFTER the night of the 14th had begun — who must search?
The Rambam rules: whoever held the house at the start of the night of the 14th bears the search obligation. If the key was handed over after the night began, the landlord must search.
Question 5
One leaving on a journey within 30 days of Pesach with no household members staying — what must he do?
The Rambam rules that one leaving within 30 days of Pesach must search before departing. Only if household members remain behind is he exempt.