《辽史·列传·卷十五》
十七年，南伐，宋将范庭召布列方阵以待，当时皇弟耶律隆庆担任先锋，问各位将领有谁敢于拒敌，萧柳说： 如果得到骏马，那我就愿意先行冲锋。 
十七年，南伐，宋将范庭召列方阵而待。时皇弟隆庆为先锋，问诸将佐谁敢当者，柳曰： 若得骏马，则愿为之先。 
In the seventeenth year, when the army marched south, the Song general Fan Tingzhao set up a square formation to await them. At that time, the emperor's younger brother Yelu Longqing served as the vanguard and asked the generals who dared to resist the enemy. Xiao Liu said: "If I can get a fine horse, then I am willing to charge ahead."