《太平广记·卷一百三十二·报应三》
知元以后就挑选怀孕的牛犊和猪羊驴等杀吃。它们被杀死后，怀的胎还动，很长时间才能死。
知元乃拣取怀孕牛犊及猪羊驴等杀之，其胎仍动，良久乃绝。
After knowing this, Yuan later selected pregnant cows, pigs, sheep, donkeys, etc. to kill and eat. After they were killed, the fetuses in their wombs were still moving and it took a long time for them to die.