Musannaf Ibn Abi Shaybah

Hazrat Zaid bin Thabit says that in the case of accidental killing resembling intentional murder (shibh-e-amd), thirty camels of four years of age, thirty camels of five years of age, and forty such she-camels whose age is between six and seven years and none of them is barren, will be given. And Ali (may Allah be pleased with him) used to say that in shibh-e-amd, thirty-three camels of four years of age, thirty-three camels of five years of age, and thirty-four such she-camels whose age is between six and seven years and none of them is barren, will be given.