Abu Dawud Book 34, Hadith Number 4534.
Chapter : Bloodwit for accidental killing that is quasiintentional killing.
Narated By Mujahid : ‘Umar gave judgment that bloodwit for quasi-intentional murder should be thirty she-camels in their fourth year, thirty she-camels in their fifth year, and forty pregnant she-camels in their sixth year up to the ninth.