Ali Nasiri

" Whenever you find a fly in your bowl, make it float, since there is illness in one of its wings and cure in another one. Fly gives priority to poison and postpones cure. " This hadith is one of the most challenging reports which has been found in the Sunni original hadith collections and Shiite non -original sources. Reliability and unreliability of this hadith has been the main concern of many discussions and has provided some different views regarding this haith. The author of the present article investigates the position of the above mentioned hadith in the Sunni and Shiite hadith books. He also analyzes the presented views in this regard and concludes that the earliest source of this hadith are of the Sunni origin and such a hadith with a reliable chain of documents is not found in the reliable Shiite hadith books.