《旧唐书·本纪·卷八》
八月五日，诏命老而无妻、老而无夫、幼而无父，老而无子之人，免除今年地税的一半，江淮以南有遭水灾之处，本道派使者救济。
八月戊子，制鳏寡惸独免今年地税之半，江淮已南有遭水处，本道使赈给之。
On August 5, an imperial edict exempted people who were old and without a wife, old and without a husband, young and without a father, and old and without a son from half of this year's land tax, and an envoy was sent to the south of the Yangtze River to provide relief in the areas affected by the flood.