Funerals (Al-Janaa'iz)

Bukhari :: Book 2 :: Volume 23 :: Hadith 467

Narrated Abu Huraira:

The Prophet said, "Every child is born with a true faith of Islam (i.e. to worship none but Allah Alone) and his parents convert him to Judaism or Christianity or Magianism, as an animal delivers a perfect baby animal. Do you find it mutilated?"