Christian’s Serume Bismillaahi aktubu, Christendom used the Analogy of “Serume.” So the one being inserted are only “Germs.” Then who inserted that to a horse, he could just be so relax and then just taking the blood which could function as the Antibody for “the germs,” as soon as the immune system has formed itself. Islam making the Analogy “blood transfer and immunication.” So which being inserted is the blood from a healthy human being, who is free from any diseases and then it will be transfer into another human being who is in need of blood. And which is being inserted is a less strong Bacteria, to fight certain diseases. Shortly, anybody couldn’t give anything which they did not have and which is not Halaal (lawful) to be given, just couldn’t. Also that Syaithan do not vanish, just that they could not influence anybody who is Ikhlas (sincerely in doing Ibadah just because of Allahu Jalla Jalaaluhu and only hope for His reward). Infact, their wickedness is weak to human beings who are Ikhlas (sincere and devoted) to Himself in doing any good deeds. Assalamu manit taba’al huda (May peace, development and safe from guile be upon who follow the guidance). Assalamu'alaikum wa rahmatullahi wa barakaatuh (May peace, development and safe from guile be upon who follow the guidance and blessings from Allah and His mercy be upon you).