Produce purchased with second tithe money contracts impurity from a *secondary* source. According to the Rambam, what must be done?
Halachah 2: Because the produce is Scripturally pure, the Rabbis required it to be brought to Jerusalem — but to support their decree of impurity they also required it to be redeemed first, then eaten in Jerusalem.
Question 2
Which of the following may NOT be purchased with money from the second tithe?
Halachah 4: Salt (along with water, truffles, and mushrooms) may not be purchased because it is not a product of the earth. Honey, milk, and eggs qualify as products of the earth's products (Halachah 5).
Question 3
Why may one not use second tithe money to purchase *terumah*?
Halachah 11: Purchasing terumah restricts the consumption of both foods — terumah can only be eaten by priests in the evening, while the second tithe may be eaten by non-priests immediately after immersion and only in Jerusalem. This clash of rules is forbidden.
Question 4
A person *inadvertently* purchases produce outside Jerusalem with second tithe money. What is the correct remedy?
Halachah 15: An inadvertent purchase is treated as an erroneous transaction and nullified. The seller must return the money, which reverts to its original status as second tithe money.
Question 5
Someone uses second tithe money to buy land, and the seller then flees. What must the purchaser do?
Halachah 17: The general principle is that when tithe money is spent on non-food items and the seller has fled or died, the purchaser must eat food of equivalent value in Jerusalem under all the restrictions that apply to the second tithe.