I Slaughtered the Animal I Vowed to, Then I Ate From it

Question :

When I graduated from the second year to the third year of intermediate school, I vowed that I would slaughter a sheep if I passed and I passed, all praise and thanks be to Allah, and I slaughtered the sheep. Is it permissible for me and my secondary family members to eat from it? If we ate from it, what is incumbent upon us, when I vowed it as charity for Allah's sake?

Answer:

This is a vow to give charity dependent upon something that has taken place. So it is obligatory to fulfill it, according to the words of the Prophet ﷺ :
"Whoever vowed to obey Allah, he should obey Him and whoever vowed to disobey Allah, he should not disobey Him."

Since the questioner said that he vowed it as charity, it must be disbursed to those to whom it is permissible to give Zakah, that is, the poor and their like. The one who took the vow should not eat from it, nor should his immediate or secondary family, because they are not among those to whom Zakah money is disbursed, so they should not be given what was vowed.

If this person who took the vow has done so and eaten it along with his immediate and secondary family, then he should slaughter another animal in its place, like the previous animal or a better one if the previous one was acceptable and distribute it among the poor. Unless, it was his intention when he contracted the vow to eat it with his family, or he made a verbal. condition, or if it is customary to do so, then he may do so.

And may peace and blessings be upon our Prophet, Muhammad and upon his family and Companions.

Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 6 Pages 428-429