Fruit of a Tree or Grapevine's Fourth Year - Neta Revay, Kerem Revay

Redemption of sanctified property

Determining the year for Citrons: Rosh HaShanah 14b-15b; Succah 39b

Fruit is considered to belong to the year in which it ripened, and that year begins with the 15th of Shevat: Rosh HaShanah 10a-b

How many judges sit on the court evaluating the fruit: Sanhedrin 2a

The Edict forbidding redemption of the 4th-Year Produce within 1 day's travel of Jerusalem, so that the markets would be full of fruit: Rosh HaShanah 31b; Beitzah 5a-b

Rescension of the above edict by Rabbi Yochanan ben Zakkai: Rosh HaShanah 31b; Beitzah 5a-b

Adding one-fifth to the value when redeeming one's own revay: Bava Metzia 55b