《资治通鉴·唐纪·唐纪三十六》
肃宗多次上表请求归帝位于玄宗，自己还东宫仍为太子，玄宗不答应。
上累表请避位还东宫，上皇不许。
Emperor Suzong repeatedly requested to return the throne to Emperor Xuanzong and remain in the Eastern Palace as the crown prince, but Emperor Xuanzong did not agree.