The ruling on one who vowed to slaughter a ram every year and was unable to fulfill it

The question: And the first message we will begin with is from Sister Intisar Sa'id from the People's Democratic Republic of Yemen, from al-Mukhtar Street: Your Eminence! My mother made a great vow that she was unable to fulfill due to circumstances. This vow was that she would slaughter a ram every year. The financial conditions were very good in the past, but they worsened in the end. She made this vow because of my brother's illness, saying: If he is healed, I will slaughter a ram every year. But due to the bad circumstances, she was unable to do so. So what is the way out of this, may Allah guide you?
The answer: In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, and may peace and blessings be upon the Messenger of Allah, and upon his family and his Companions, and whoever follows his guidance.
As for what follows: If her brother was healed, the vow remains a debt in her mother's obligation. If she was unable to fulfill it and did not perform it, and then she died, it must be paid from her estate if she has an estate. But if she has no estate, it is dropped from her, unless her children fulfill it on her behalf, in which case may Allah reward them with good. This is if the ram was for Allah alone, meaning she vowed this ram for Allah alone, to draw near to Allah (Glorified and Exalted is He). But if the ram was vowed for al-'Ayd al-Rus, or for some of the awliya (close friends of Allah), this is major shirk (associating partners with Allah), it is invalid, it is not to be fulfilled, and it is invalid shirk that is not acceptable. In this case, she would be a mushrikah (one who associates partners with Allah) with this vow, may Allah protect us from that. So the point is: if the slaughter, if the ram was vowed for Allah alone, to slaughter it for Allah as a means of drawing near to Allah (Glorified and Exalted is He), then this is true; because the Messenger of Allah (peace and blessings be upon him) said: . But if it was vowed for some of the awliya, for al-'Ayd al-Rus in Aden, or for some of the deceased masters there in Hadramawt or others, or for some of the other awliya, this is an invalid vow, and shirk with Allah , and it is not to be fulfilled; rather, it is invalid. Yes.