The Book Pertaining to Punishments Prescribed by Islam (Kitab Al-Hudud)

Muslim :: Book 17 : Hadith 4239

Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: No requital is payable for a wound caused by an animal, for (falling into) a well and a mine, and one-fifth (is the share of the government) in the buried treasure (treasure-trove).