أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ أَيُّوبَ السَّخْتِيَانِيِّ، عَنِ الْقَاسِمِ بْنِ رَبِيعَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ قَتِيلُ الْخَطَإِ شِبْهِ الْعَمْدِ بِالسَّوْطِ أَوِ الْعَصَا مِائَةٌ مِنَ الإِبِلِ أَرْبَعُونَ مِنْهَا فِي بُطُونِهَا أَوْلاَدُهَا ‏"‏ ‏.‏

It was narrated from Al-Qasim bin Rabi'ah, from 'Abdullah bin 'Amr, the Prophet said: "The accidental killing, which seems intentional, with a whip or stick, (the Diyah) is one hundred camels, of which forty should be (she-camels) which their young in their wombs." Translation Not Available

Book Ref: Sunan An Nisai Book 45 Hadith 4791
Web Ref:  Sunan An Nisai Vol 5 Book 45 Hadith 4795