Fulfill your vow

Q: I am an 80 year old female citizen. Fifteen years ago, when my son was ill, I vowed to fast three days every year if he was cured. This vow was not restricted to a specific date and I continued fulfilling it since my son was three years old until he reached fifteen. Due to my age I am not able to continue, so do I have to pay a certain Fidyah (ransom) since I am old now and not able to continue fulfilling my vow? What should I do? (Part No. 23; Page No. 390

A: If this woman is unable to fulfill the mentioned vow, she must offer a Kaffarah (expiation) of a broken oath instead. This is by feeding ten needy persons half a Sa` (1 Sa`=3 kg. Approx.) for each, which equals one and a half kg, or clothing them with one garment each, or freeing a believing bondsman. If she is not able to do so, she must fast for three days.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.