A:
Slaughtering (sacrificing) at shrines is considered major Shirk (associating others with Allah in His Divinity or worship). A person who does this is cursed, as is authentically established that
`Aly, (may Allah be pleased with him) narrated that the Messenger of Allah (peace be upon him) said:
Allah has cursed the one who slaughters (a sacrifice) to other than Allah.