Sunan of Abu Dawood Book 41, Hadith 4552

وَبِهِ عَنْ أَبِي إِسْحَاقَ، عَنْ عَلْقَمَةَ، وَالأَسْوَدِ، قَالَ عَبْدُ اللَّهِ فِي شِبْهِ الْعَمْدِ خَمْسٌ وَعِشْرُونَ حِقَّةً وَخَمْسٌ وَعِشْرُونَ جَذَعَةً وَخَمْسٌ وَعِشْرُونَ بَنَاتِ لَبُونٍ وَخَمْسٌ وَعِشْرُونَ بَنَاتِ مَخَاضٍ ‏.‏

Narrated 'Ali:The bloodwit for unintentional murder is in four parts: twenty five she-camels in their fourth year, twenty five she-camels in their fifth year, twenty five she-camels in their third year, and twenty twenty five she-camels in their second year