What are the rulings regarding the distribution of a votive sacrifice and a fidyah (expiatory sacrifice), and is it permissible for the wife to offer one sacrifice on behalf of herself and her husband due to their financial hardship?

Whoever vows to slaughter an animal but does not specify its type, then what is sufficient for him is the minimum that is acceptable for a sacrifice (udhiyah), which is a sheep that has completed one year and entered its second, or a goat that has completed two years. This is because a vow is interpreted to mean the minimum obligation of its kind. Therefore, the age and soundness requirements for the udhiyah apply.