《韩非子·内储说上七术》
既然这是会造成许多家相互残杀的情形，那么即使对他们处以刑罚也是可行的。
此残三族之道也，虽刑之可也。
Since this is the situation that is bound to lead to the mutual killings of many families, then even imposing heavy punishments on them is feasible.