《资治通鉴·宋纪·宋纪二》
可是，杀害人家的两个哥哥，却又北面称臣，则有震主之威。你又镇守长江上流重镇，这样，以古推今，你恐怕在劫难逃。 
但杀人二兄而以之北面，挟震主之威，据上流之重，以古推今，自免为难。 
However, killing someone's two brothers, and then claiming to be a minister to the north, has the power to shock the emperor. You are also guarding the important town on the upper reaches of the Yangtze River. In this way, judging from the past to the present, you are probably doomed.