《资治通鉴·唐纪·唐纪五十五》
才到杜家时，岐阳公主就与杜商议说： 皇上赐给我们的奴婢，是终究不肯屈从的，可以奏请皇上将他们收回去，我们自己再悉数购买出身低微、可以指使的奴婢吧。 
始至，则与悰谋曰： 上所赐奴婢，卒不肯穷屈，奏请纳之，悉自市寒贱可制指者。 
When she first arrived at the Du's, Princess Qiyang discussed with Du, "The servants the emperor bestowed on us will never be obedient. We might as well petition the emperor to take them back and buy servants from humble origins who will do our bidding instead."