《资治通鉴·唐纪·唐纪三十九》
药葛罗让郭子仪先拿酒杯对天发誓，郭子仪将酒洒在地上，发誓说： 大唐天子万岁！
药葛罗使子仪先执酒为誓，子仪酹地曰： 大唐天子万岁！
Yaoluoge asked Guo Ziyi to hold the goblet and swear to heaven first, Guo Ziyi poured the wine on the ground and swore: Long live the emperor of the Tang dynasty!