It was narrated from Ya'qub bin Aws, from a man among the Companions of the Prophet that:when the Messenger of Allah entered Makkah on the Day of the Conquest, he said: "Indeed, every accidental killing on purpose, or resembling on purpose - killing with a whip or stick, for it are forty (she-camels) which their young in their wombs

English translation · Sunan an-Nasa'i