What is the cause of the symptoms the questioner is experiencing, such as memory loss, excessive whispering (waswasa), difficulty studying and concentrating, and severe yawning when reading the Quran, and what is its treatment? Is what he did with his friend and sacrificing the rooster related to this, and what is the ruling on his action?

Allah afflicts His servants with diseases as an expiation for sins and an elevation of ranks, and He has legislated for them to seek medicine. Medicines are of two types: sensory (medical) and spiritual (legal ruqyah). Ruqyah with the Qur'an and Prophetic supplications is a healing and a mercy, provided that it does not involve polytheism (shirk).

To achieve healing, the following is recommended: 1. Turning to Allah Almighty and being certain that healing is in His hand. 2. Persisting in the remembrance of Allah and reading the Qur'an, especially the morning and evening remembrances (adhkar). 3. Using legal ruqyah and repeating it. 4. Removing obstacles that might prevent the benefit of ruqyah, such as weak reliance on Allah (tawakkul), committing forbidden acts, or the presence of objectionable things in the home like pictures and dogs.

While seeking treatment, one should exercise patience and anticipate reward from Allah, for what is with Allah is better and more enduring.