Hadith 1706
Sayyiduna Abu Hurairah (may Allah be pleased with him) said: The Noble Prophet (peace and blessings be upon him) said: "There is no compensation for an injury caused by an animal, one who falls into a well is pardoned, and the blood of one who dies in a mine is also pardoned, and one-fifth (of the treasure) belongs to the public treasury (Bayt al-Mal)."