Medicine 
Bukhari :: Book 7 :: Volume 71 :: Hadith 652
Narrated Anas:
The Prophet said, "No 'Adha (no contagious disease is conveyed to others without Allah's permission), nor Tiyara, but I like the good Fal, i.e., the good word."
Medicine
Bukhari :: Book 7 :: Volume 71 :: Hadith 652
Narrated Anas:
The Prophet said, "No 'Adha (no contagious disease is conveyed to others without Allah's permission), nor Tiyara, but I like the good Fal, i.e., the good word."