One Thousand and One Nights 
Story of the Greek King and the Physician Douban 

When a wandering physician named Douban cures a Greek king of his leprosy, he inspires murderous jealousy in the king’s vizir, leading the king to tell a cautionary tale of his own. A story within "The Story of The Fisherman", this is the sixth of 34 tales in the classic "Arabian Nights" collection translated by Andrew Lang.-