Types of Blood-Wit (Kitab Al-Diyat)
Dawud :: Book 39 : Hadith 4570
Narrated Some people:
AbdulAziz ibn Umar ibn AbdulAziz said: Some people of the deputation which came to my father reported the Apostle of Allah (peace_be_upon_him) as saying: Any physician who practises medicine when he was not known as a practitioner before that and he harms (the patients) he will be held responsible. AbdulAziz said: Here physician does not refer to a man by qualification. it means opening a vein, incision and cauterisation.