أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ بَزِيعٍ، قَالَ حَدَّثَنَا يَزِيدُ، قَالَ حَدَّثَنَا خَالِدٌ، عَنِ الْقَاسِمِ بْنِ رَبِيعَةَ، عَنْ يَعْقُوبَ بْنِ أَوْسٍ، أَنَّ رَجُلاً، مِنْ أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم حَدَّثَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم لَمَّا قَدِمَ مَكَّةَ عَامَ الْفَتْحِ قَالَ " أَلاَ وَإِنَّ قَتِيلَ الْخَطَإِ الْعَمْدِ قَتِيلَ السَّوْطِ وَالْعَصَا مِنْهَا أَرْبَعُونَ فِي بُطُونِهَا أَوْلاَدُهَا " .
It was narrated from Ya'qub bin Aws that: a man from among the Companions of the Prophet told him, that when the Messenger of Allah came to Makkah, in the Year of the Conquest, he said: "Indeed, accidental killing on purpose, is killing with a whip or stick, for which forty (she-camels) with their young in their wombs." Translation Not Available
Book Ref: Sunan An Nisai Book 45 Hadith 4797
Web Ref: Sunan An Nisai Vol 5 Book 45 Hadith 4801