Musannaf Ibn Abi Shayba 18:13

Abu Bakr narrated to us, he said: Abd al-A’la narrated to us, from Yunus, from al-Hasan, regarding the ages of the camels in the blood money (diyah). He said: Thirty *khalifah* (pregnant camels), thirty *jadha’ah* (four-year-old camels), twenty *ibnat makhad* (one-year-old female camels), and twenty *ibnat labun* (two-year-old female camels).