A person vows 'I will not marry Miriam because her father is evil' — but her father turns out to be righteous. What is the status of this vow?
When a vow is built on an explicitly stated condition that proves false, the vow is structurally void from the outset — no sage release is needed.
Question 2
A person vows not to eat figs AND grapes, but only the fig-vow portion is nullified. What happens to the grape-vow?
Whenever any portion of a vow is nullified, the entire vow is nullified. A vow cannot stand in fragments.
Question 3
A person vowed not to benefit from his friend under social pressure to marry the friend's daughter. Later, the pressure disappears. How do we interpret the vow?
We always follow the motivating factor and extrapolate from it. A vow born of social pressure is interpreted in that context.
Question 4
Someone vowed 'I will never enter your house.' The friend then sells the house to a third party. Is the vower forbidden from entering the house?
Transactional vows are interpreted by their context. 'Your house' means the house as belonging to that person; once sold, the locus of the prohibition may no longer apply.
Question 5
Which principle governs cases where a new, unforeseen circumstance arises after a vow was taken?
An unforeseen circumstance provides grounds for a sage to release the vow — it does not automatically void it (unlike a false stated condition).