What is incumbent upon me, given that I made a vow in anger to participate in the burial of a person if they die, even though the fulfillment of this vow is almost impossible?

A vow to participate in the burial of a Muslim is an act of obedience and worship that must be fulfilled, based on the Prophet's (peace be upon him) saying: "Whoever vows to obey Allah, let him obey Him." The proof that it is an act of worship is the Prophet's (peace be upon him) saying: "Whoever attends a funeral until the prayer is performed, he will have a qirat; and whoever attends until it is buried, he will have two qirats." Therefore, the vow must be fulfilled unless anger leads to loss of consciousness. If fulfilling the vow becomes impossible, the one who made the vow must offer an expiation for breaking an oath, which is: feeding ten poor people, or clothing them, or freeing a slave. If he cannot find any of these, then fasting for three days, based on the Prophet's (peace be upon him) saying: "Whoever makes a vow he cannot fulfill, its expiation is the expiation for an oath. And whoever makes a vow he can fulfill, let him fulfill it."