What is the ruling on buying meat from an Udhiyah slaughtered for "Sidi Ali" as a thanksgiving for his blessings, knowing that it was slaughtered according to the Islamic method?

Visiting the graves of righteous people for the purpose of slaughtering animals, offering vows, and food is among the innovations (bid'ah) forbidden by Islamic law. The Prophet, peace and blessings be upon him, cursed the Jews and Christians for taking the graves of their prophets as places of worship. Sheikh al-Islam Ibn Taymiyyah mentioned that slaughtering at graves is not permissible, and whoever thinks it is commendable is ignorant, misguided, and goes against the consensus of Muslims. If the slaughter is intended to glorify the interred, it is major polytheism (shirk akbar) and it is impermissible to eat from it. However, if the slaughter is for Allah at the grave, it is forbidden, and it is disliked to eat from such a slaughtered animal or to purchase it.