Q: When Observing one’s compensatory fast, may one nullify it for whatever
reason?
A: Assuming it's before zuhr (noon), it's unproblematic; however, breaking one’s
compensatory fast after zuhr (noon) is not permissible; doing so entails the
payment of 7½ kg of food to the needy ( ¾ kg per needy person). Assuming one
doesn’t have the financial means to render such food, he/she ought to fast for
three days for every broken compensatory fast.