Chapter 87: Blood Money (Ad-Diyat)
Narrated Abu Huraira: Allah' s Messenger (ﷺ) said, "There is no Diya for persons killed by animals or for the one who has been
killed accidentally by falling into a well or for the one killed in a mine. And one-fifth of Rikaz
(treasures buried before the Islamic era) is to be given to the state."
Sahih al-Bukhari 6912