Question: Among the cures that they use for treating people is to slaughter a sheep or a chicken on a patient’s chest or head; or to put some silver rings in the patient’s hand, or a small piece of cloth or a handful of dust, which I think they claim it to be of the clothing or grave dust of a pious relative of theirs. What is the ruling on seeking treatment through such ways? Is it permissible to trust in what such people say?
Answer: It is Haraam (prohibited) to sacrifice to other than Allaah. The Prophet (peace be upon him) cursed those who slaughter a sacrifice to other than Allaah, which is considered a form of Shirk (associating others with Allaah in His Divinity or worship)… read more here.