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." (Using translation from Nasāʾī 4796)
أَنَّ رَجُلًا مِنْ أَصْحَابِ النَّبِيِّ ﷺ حَدَّثَهُ أَنَّ النَّبِيَّ ﷺ لَمَّا قَدِمَ مَكَّةَ عَامَ الْفَتْحِ قَالَ «أَلَا وَإِنَّ قَتِيلَ الْخَطَأِ شِبْهِ الْعَمْدِ قَتِيلَ السَّوْطِ وَالْعَصَا فِيهِ مِائَةٌ مِنَ الْإِبِلِ مِنْهَا أَرْبَعُونَ» يَعْنِي فِي بُطُونِهَا أَوْلَادُهَا