《太平广记·卷十三·神仙十三》
他曾经放过牛，和邻居孩子轮流当牧童。苏仙公放牛时，牛都不离他身边左右，到了晚上不用驱赶牛群就自己回家。
先生家贫，常自牧牛，与里中小儿，更日为牛郎。先生牧之，牛则徘徊侧近，不驱自归。
He once herded cows, and took turns with the neighbor's children to be the cowherd. When Su Xian Gong herded the cows, the cows would not leave his side, and returned home on their own at night without being driven.