《旧唐书·本纪·卷二十》
先皇帝的皇后慈光照临四海，懿德冠于后宫，要推崇尊仰就要确定美名，而尊敬长上的榜样应当表现在大孝上，望奉上 皇太后 的尊号。 
伏以大行皇帝皇后母临四海，德冠六宫，推尊宜正于鸿名，敬上式光于睿孝，望上尊号曰皇太后。 
The previous emperor's empress's motherly radiance enveloped the four seas, her virtuous deeds crowned the imperial palace, in order to show respect and admiration and determine a respectful title, the custom should be to show great filial piety, might your servant recommend that we give her the honorific title of 'Imperial Dowager'? 