《史记·三十世家·齐悼惠王世家》
当时齐国人主父偃知道徐甲出使齐国是为了娶王后的事，也趁机对徐甲说： 如果事情成功了，希望你能跟上头说一说我的女儿愿在齐王后宫服侍。 
是时齐人主父偃知甲之使齐以取后事，亦因谓甲： 即事成，幸言偃女原得充王後宫。 
At that time, the chief minister of the Qi kingdom, Ren father Yan, knew that Xu Jia was on an envoy to Qi to marry the queen, and took the opportunity to tell Xu Jia: "If the matter is successful, I hope you can tell the upper management that my daughter is willing to serve in the Qi King's harem.