《旧唐书·本纪·卷九》
皇上诏命两京及天下州郡取官家财物铸造金铜天尊及佛各一个身躯，送到开元观、开元寺。
敕两京、天下州郡取官物铸金铜天尊及佛各一躯，送开元观、开元寺。
The emperor issued an edict ordering all prefectures and counties under the jurisdiction of the two capitals and across the empire to melt down the gold and bronze of their official property to cast statues of the Celestial Perfected of Gold and Bronze and the Buddha, one statue of each. The statues were sent to the Kaiyuan Temple and the Kaiyuan Daoist Temple respectively.