(33, 34) باب ذِكْرِ الاِخْتِلاَفِ عَلَى خَالِدٍ الْحَذَّاءِ
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."
Reference: Sunan an-Nasa'i 4797
In-book reference: Book 45, Hadith 92
English translation: Vol. 5, Book 45, Hadith 4801