Wanunazzilu mina alqur-ani mahuwa shifaon warahmatun lilmu/mineena walayazeedu aththalimeena illakhasara
And We send down of the Qur'an that which is healing and mercy for the believers, but it does not increase the wrongdoers except in loss.
Wa-itha maridtu fahuwayashfeen
And when I am ill, it is He who cures me.
Narrated by Abu Huraira
The Prophet said, "There is no disease that Allah has created, except that He also has created its treatment."
Narrated by 'Aisha
Allah's Apostle used to treat with a Ruqya saying, "O the Lord of the people! Remove the trouble The cure is in Your Hands, and there is none except You who can remove it (the disease)."