《资治通鉴·唐纪·唐纪四十》
十二月庚辰，盗贼挖掘了郭子仪父亲的坟冢，官府搜捕，没有抓获。
十二月，庚辰，盗发郭子仪父冢，捕之，不获。
On the day GENG CHEN in the twelfth month, thieves dug up the grave of GUO Ziyi’s father, but a government search was unable to catch them.