《新唐书·本纪·卷一·高祖》
十二日，封隋恭帝杨侑为阝国公，并下诏书说： 近来时世变迁，前朝的皇室宗亲，无不尽遭诛灭。
乙酉，奉隋帝为酅国公，诏曰： 近世时运迁革，前代亲族，莫不夷绝。
On the 12th, the Sui Emperor Gong, Yang You, was titled Duke of Fu Guo, and an edict was issued, stating: In recent times, the times have changed, and the royal relatives of the former dynasty have all been exterminated.