What should someone do if they have a vow to fast on Monday or Thursday and the eve of Tisha B'av falls on that day?

Synopsis

One should either ask to nullify the vow or borrow the fast by fasting until after Mincha and eating the parting meal before sunset. The Gaonim rule that one may continue with the regular fast structure. Those who have vowed a 'dream fast' follow the same rules.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

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