I broke a vow that I would fast for forty days. However, my father nullified my vow, can he do this? Do I need to make up the forty days and pay kaffarah?
If one of your parents is living, they can nullify your vow. For example, your father can tell you “I do not want you to fast the 40-day vow,” then your vow will be nullified, and you don’t need to fast or pay a kaffarah.