Maliks Muwatta Book 43, Hadith Number 9.

Section : Inheritance of Blood-Money and Dealing Harshly in Taking It.

Yahya related to me from Malik from Ibn Shihab that Umar ibn al-Khattab demanded of the people at Mina, “If anyone has knowledge of blood-money, let him inform me.” Ad-Dahhak ibn Sufyan al-Kilabi stood up and said, “The Messenger of Allah, may Allah bless him and grant him peace, wrote to me that the wife of Ashyam ad-Dibabi inherited from the blood-money of her husband.” Umar ibn al-Khattab said to him, “Go into the tent until I come to you.” When Umar ibn al-Khattab came in, ad-Dahhak told him about it and Umar ibn al-Khattab gave a decision based on that.

Ibn Shihab said, “The killing of Ashyam was accidental.”