《宋书·本纪·卷一》
豫章郡公北伐时，徐道覆便有窥伺之意，劝鲻乘虚出兵，龃不听面就到曲劝龃说： 你一向住在五岭以南，不是理该如此。衹是因刘公难以与你为敌的缘故。
道覆乃至番禺说循曰： 本住岭外，岂以理极于此，正以刘公难与为敌故也。
When the Yuzhang county magistrate went north to attack, Xu Daofu had the intention of peeping, and advised Zi to take advantage of the emptiness and send troops, but Zai did not listen and went to Qu to persuade Zai and said: You have always lived in the south of Wuling, which is not what it should be. It is only because Liu Gong cannot be your enemy.