Muhammad bin Yahya bin Abi 'Umar محمد بن يحيى بن أبي عمر العدني · Chapters on Medicine

"The Messenger of Allah (s.a.w) forbade from cures that are Khabith." Meaning poison

"The Prophet (S.A.W) cauterized As'ad bin Zurarah for Shawkah."

" I said: 'O Messenger of Allah (S.A.W)! Some of Ja'far's children have suffered from an accelerated case of the inflammation of the eye, so should I have them treated with Ruqyah?' He said: 'Yes,for indeed if there was anything that could overcome the Decree, then the evil eye would overcome it."

"I asked the Messenger of Allah (S.A.W): 'O Messenger of Allah(S.A.W)! Do you think that the Ruqyah we use, the treatments we use, and what we seek to protect ourselves will contradict anything from Allah's Decree?' He said: 'They are from Allah's Decree.'"

"I intended to prohibit Al-Ghilah until I remembered that the Persians and Romans do that, without any harm to their children."