《史记·三十世家·韩世家》
楚国如果不答应把质子放回韩国，那么公叔伯婴就知道秦楚两国并不重视虮虱的事，一定会使韩国与秦楚联合。
楚王听入质子于韩，则公叔、伯婴知秦楚之不以虮虱为事，必以韩合于秦楚。
If Chu does not agree to return the hostage to Han, then Gongshu Boying will know that Qin and Chu do not care much about Hugu, and will surely make Han ally with Qin and Chu.