Musannaf Ibn Abi Shaybah

Hazrat Rabee’ bin Nu’man narrates from his mother that a woman from the tribe of Banu Laith, whose name was Umm Haroon: While she was sitting and cutting the meat of her sacrificial animal, suddenly a dog attacked the meat in the house. The woman threw a knife at it, but her aim missed, and the knife struck her son, who was lying there, in the stomach, and he died. So Hazrat Ali (may Allah be pleased with him) paid his blood money from the public treasury (Bait-ul-Mal).