《新唐书·列传·卷四十九》
圣历三年，姚崇晋升为凤阁鸾台平章事，又迁凤阁侍郎，不久兼相王李旦府长史。
圣历三年，进同凤阁鸾台平章事。
In the third year of Shengli, Yao Chong was promoted to the position of "Fengge Luantai Pingzhang Shi", then transferred to "Fengge Shilang" and soon became the chief historian of Prince Li Dan of Xiang.