I have been under a spell for several years, so is it permissible for me to slaughter a sheep for Allah and seek His help to cure me?

Question:
May Allah reward you, Your Eminence, father. The questioner says: I am a man who has been under a spell for several years, and Allah has not granted me a cure up to now, despite my working with the lawful means. Is it permissible for me to slaughter a sheep for Allah the Mighty and Sublime alone, and to seek nearness to Him through my tawhid (the oneness of Allah) in my worship, including my slaughter, so that He will cure me, contrary to the sorcerers?

Answer:
First of all, what makes you know that the illness you have is sorcery? Illnesses, my brother, are many, and none knows them except Allah the Exalted. It is not necessary that this be from sorcery. Second, do not despair of a cure.
Do not despair of a cure. You must resort to du'a' (supplication), increase in the morning and evening adhkar (remembrance of Allah), and seek healing through lawful ruqyah (healing by Qur'anic recitation). Do not despair, if Allah wills. Allah will cure you. If you place your reliance upon Allah and work with the causes of healing through sound ruqyah and from righteous people, then Allah the Exalted and Majestic is near and responsive.
Near and responsive. As for slaughter, it is not permissible. It is not permissible. If you want to give charity, give charity without slaughter. Give charity in food, in dirhams, or in clothing, without slaughter. Because slaughter is dangerous; it is feared that you slaughter in order to obey the sorcerers who tell you to slaughter so that you will be cured. This is not permissible. Do not slaughter. Yes. However, if you want, for example, to buy meat, buy meat and give it to those in need. There is no harm in that. But you slaughter? No. Yes.