佛祖統紀 39.28

39.28

煬帝（廣文帝次子。諡法逆天虐民曰煬。左傳魯煬公。隋諡陳後主曰煬。今亦諡煬。如有報也。廣韻余尚反。暴也）

Emperor Yang (Guang, the second son of Emperor Wen. According to posthumous title rules, 'opposing Heaven and abusing the people' is called Yang. In the Zuo Tradition there is Duke Yang of Lu. The Sui gave the Last Lord of Chen the posthumous title Yang; now he is also given the posthumous title Yang, as if by retribution. Guangyun reads it with the fanqie yu + shang; it means violent).