Musannaf Ibn Abi Shaybah

Hazrat Khallas narrates that a man killed his mother by striking her with a stone. Then he began to demand his share of his mother's inheritance from his brothers. His brothers said: "There is no inheritance for you." They presented this matter before Hazrat Ali (may Allah be pleased with him). He excluded the man from the inheritance and ruled that blood money (diyat) was obligatory upon him, and said: "From your mother's side, your share will be that stone."