I vowed that if I succeeded, I would slaughter a sacrificial animal, and I succeeded, but I have not done anything up to now. What is required of me?

Question:
This questioner says: Six months ago, I said, “By Allah, if I succeed, I will slaughter a sacrificial animal and invite my friends to dinner with it.” The next day, I said, “It is a vow upon me that if I succeed, I will slaughter a sacrificial animal and invite my friends to dinner.” I estimated the amount in my intention to be five hundred riyals. I succeeded, but I have not done anything up to now. What is required of me?

Answer:
This is a vow regarding a permissible act. You have the choice between performing it or paying the expiation for an oath. Either you perform it by slaughtering this sacrificial animal and inviting your friends to it, or you pay the expiation for an oath by feeding ten poor people, giving each poor person half a sa' (a dry measure of about 3 kg), or clothing them, giving each person one garment, or freeing a slave. You have the choice. If you do not find the means to do so, you fast for three days. Yes.