Laws of Annulling Vows

Hatarat Nedarim (the annulment of vows) is a legal process which allows one to cancel a vow by reciting a text in the presence of three people. It is customary to perform hatarat nedarim in the days leading up to Rosh HaShanah or Yom Kippur, in a version of the ceremony that involves cancelling all vows taken in the past and to be taken in the future.