How should one accept the custom of fasting on Mondays and Thursdays - must one formally accept in advance?
Synopsis
The fast should be accepted immediately when it becomes permissible (after the festival months), not delayed. Various authorities discuss whether saying 'Amen' to a public announcement, or formal acceptance in Mincha the day before, is necessary.
More in Omer Mourning Practices
Is there a custom to fast on Mondays and Thursdays?
3 opinions
When should one begin fasting on Mondays and Thursdays after festivals?
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Does saying Amen to a public fast announcement obligate one to fast?
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Can one fast on Monday and Thursday if a circumcision, redemption of firstborn, or other mitzvah meal takes place that day?
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Should one recite the reading of Vayechal (forgiveness prayer) when fasting on Mondays and Thursdays?
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