Hadith.5376 - Al-Sakuni narrated from Imam Jafar ibn Muhammad Al-Sadiq (as) from his father, Imam Muhammad ibn Ali Al-Baqir (as), who said that Imam Ali ibn Abi Talib (as) said: "Whoever dies in the crowd of Friday prayer, Eid, Arafah, at a well, or on a bridge, and it is unknown who caused his death, his blood money is to be paid from the Public Treasury (Bayt Al-Mal)."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.