Musannaf Ibn Abi Shayba 18:654

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Mughira, from Ibrahim: That a camel attacked a man and killed him. Then a man came and killed the camel. Shurayh nullified the blood money (diyah) for the man, and he held the man liable for the value of the camel.