《资治通鉴·唐纪·唐纪十四》
各路军马所俘虏的高丽百姓有一万四千多人，先是集中在幽州，准备用来赏给将士们做奴隶，太宗怜悯他们父子、夫妻离散，命令有关官署按照他们的价格，全用朝廷府库的钱、布赎为平民，欢呼之声三天不绝。
诸军所虏高丽民万四千口，先集幽州，将以赏军士，上愍其父子夫妇离散，命有司平其直，悉以钱布赎为民，欢呼之声，三日不息。
There were more than fourteen thousand Goguryeo people that had been captured by troops. At first, they were gathered in Youzhou, and the plan was to reward them to soldiers as slaves. Emperor Taizong pitied the families that had been separated, so he ordered the relevant government departments to buy them out for the same amount of money and fabrics from the state treasury, so that they could become ordinary people again. The joyful cheers lasted for three days.