佛祖統紀 54.23

54.23

唐玄宗開元十八年。勅兩京諸郡立齊太公廟○肅宗上元元年。追封太公為武成王。祭典同文宣王。

In the eighteenth year of the Kaiyuan era of Emperor Xuanzong of the Tang, an imperial decree ordered that temples to the Grand Duke of Qi be erected in both capitals and across all commanderies. In the first year of the Shangyuan era of Emperor Suzong, the Grand Duke was posthumously enfeoffed as King Wucheng, with sacrificial ceremonies identical to those for King Wenxuan.