When one takes a shevua (oath) to fast on certain days, and Shabbat, Yom Tov, Erev Yom Kippur, Hanukkah, Purim, or Rosh Chodesh fall within those days, does the oath apply?
Synopsis
An oath to fast establishes a general obligation (inclusive of special days) unless made explicitly about a specific protected day. Explicit oaths about Shabbat or Yom Tov are vain oaths because fasting is already commanded on those days. Oaths about rabbinic-origin days like Hanukkah and Purim do establish obligation.
More in Communal Fasts
When an individual accepts upon themselves a fast for a specified number of days, and Shabbat, Yom Tov, Rosh Chodesh, Hanukkah, Purim, or Erev Yom Kippur fall within those days, does the fast obligation apply to those special days?
3 opinions
When one vows explicitly to fast on Shabbat, Yom Tov, Erev Yom Kippur, Hanukkah, Purim, or Rosh Chodesh specifically, what is the halakhic status of such a vow?
2 opinions
What is the status of a fast accepted for a small number of days (e.g., one or two specific days) in terms of whether it requires sage's release?
1 opinions
Is the obligation for a sage to release a vow absolute, and what opening should the sage use when granting release?
2 opinions
Are Hanukkah and Purim considered 'Yom Tov' in common speech and vow language?
2 opinions
Is Erev Yom Kippur classified as a 'Yom Tov' for purposes of vow exclusions?
2 opinions
What is the status of Rosh Chodesh (new month) when it falls within a vowed multi-day fast?
3 opinions across 3 eras
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