Vowing to bring drummers and throw a party if the sons lived

Q: I had twin sons who were sick during their early days. I made a vow to celebrate their circumcision by hiring drummers if Allah (Exalted be He) would keep them alive and cure them. We circumcised the children but both my husband and my brother refused to hire the drummers. Since I have known that it is obligatory to fulfill vows, what should I do? It is worth mentioning that I made this vow more than ten years ago. Please avail me with your beneficial answer. Thanks

A: It is not permissible to fulfill the vow mentioned in the question because it is a vow to commit a sin, and beating drums is a Haram (prohibited) form of entertainment. The Prophet (peace be upon him) said: "Anyone who makes a vow (that involves an act) that will disobey Allah should not disobey Him (i.e. Should not fulfill their vow)." You are required to offer Kaffarah (expiation) for an oath. (Part No. 23; Page No. 242) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.