《宋史·本纪·卷四》
夏四月初三，任命枢密直学士窦翱、中书舍人郭赞为参知政事，如京使柴禹锡为宣徽北院使兼枢密副使。
夏四月甲子，以枢密直学士窦偁、中书舍人郭贽并参知政事，如京使柴禹锡为宣徽北院使兼枢密副使。
On the third of the fourth month, Dou Ao, the imperial advisor, and Guo Zan, the imperial assistant, were appointed as co-administrators of state affairs, while Chai Yuxi, the imperial envoy, was appointed as vice director of the Xuanhui Northern Court and co-administrator of state affairs.