《辽史·本纪·卷二十》
十五日，夏国李谅祚派使者请求解除边防武备紧急状态，皇上立即派萧友括奉诏前去抚谕之。
丁亥，夏国李谅祚遣使乞弛边佣，即遣萧友括奉诏谕之。
On the 15th, Xia's Li Liangzuo dispatched an envoy to request that the state of emergency on the border defense be removed; the emperor immediately dispatched Xiao Youkuo to convey the imperial decree and comfort him.