《资治通鉴·唐纪·唐纪六十六》
福建观察使杜宣猷每当寒食之时，都要派遣官员分别去祭祀宦官祖先的坟墓，宦官们感恩戴德，在唐懿宗面前为杜宣猷说好话，庚申，唐懿宗任命杜宣猷为宣歙观察使，当时人戏称杜宣猷为 宦官敕使的守墓户 。
福建观察使杜宣猷每寒食遣吏分祭其先垅，宦官德之，庚申，以宣猷为宣歙观察使，时人谓之 敕使墓户 。
Every time the cold food festival came, Du Xuanyou, the observational envoy of Fujian, would send officials to sacrifice to the tombs of the eunuchs' ancestors respectively. The eunuchs were grateful and spoke well of Du Xuanyou in front of Emperor Yizong of Tang. On the day of geng-shen, Emperor Yizong of Tang appointed Du Xuan-you as the emissary of Xuan-she. Scribe, at that time people jokingly called Du Xuanyou the "grave keeper of the eunuch's edict."