《旧唐书·列传·卷三十六》
那一年，太子葬于缑氏县景山的恭陵，葬制以天子之礼，百官三十六日穿丧服。高宗亲自做《睿又德纪》，并自己书写，刻在石上，树立于陵侧。章怀太子李贤，字明允，是唐高宗的第六子，武则天生。
载初元年春，为酷吏所陷，下狱死。章怀太子贤，字明允，高宗第六子也。
That year, Li Hong was burried in Jingling of Goutou County with the ritual of an emperor. Officials wore mourning clothes for 36 days. Emperor Gaozong personally wrote Nengrui Deji, which was carved on a stone tablet and placed beside his tomb.