The ruling on eating from a sacrificial animal slaughtered in fulfillment of a vow, if it is in exchange for a blessing or the removal of a calamity

Question : But here is a matter distinct from the hady (sacrificial animal of the pilgrimage). If a person vows to slaughter a sheep or a camel in order to obtain a blessing or to remove a calamity, as some people do, saying, “If Allah heals my sick one, I have a vow upon me to slaughter a sheep,” and some Bedouins say they will slaughter a camel, does he eat from it or not?

Answer : We say that the default is that what is in exchange for a blessing is intended as gratitude for that blessing. If the intention is gratitude, it becomes a right of the poor and the needy, so he should not eat anything from it. Yes, if the context indicates that the intention is to feed the neighbors and to hold a celebration, such as if he specifies it in connection with a wedding, for example, saying, “If my son gets married, I have a vow upon me to slaughter a camel.”
In this case, we know that he does not intend to draw near to Allah with the camel or to give thanks for the blessing, but rather he intended to expand the celebration and make it grander. So it is for him and for you. The conclusion is that the default in looking at the exchange for a blessing or defense against a calamity is that it is gratitude to Allah the Exalted, so all the poor eat from it, as Allah the Exalted said: Unless there is evidence that the intended slaughter is customary, meaning not an act of worship, in which case this evidence is acted upon.