Is it obligatory to fulfill a vow by slaughtering a goat or a sheep after the condition has been met, and what are the specifications of the sacrificial animal? Is it permissible to give its value in cash, and if so, what is the amount of money that must be given?

A person must fulfill what they have vowed, and it is not permissible to change it; this is the view of the majority of scholars. If one vows to slaughter an animal, it is stipulated that it must meet the conditions of a sacrificial animal (udhiyah) in terms of age and freedom from defects, based on the rule that a vow is interpreted as fulfilling the minimum obligation.