《太平广记·卷三十三·神仙三十三》
开元年间，皇帝把他征召到京城，让他住在开元观，对他施恩更多了。
开元中，徵至，止开元观，恩渥愈厚。
During the Kaiyuan era, the Emperor summoned him to the capital, had him stay at the Kaiyuan Temple, and bestowed upon him even greater favor.