《旧唐书·本纪·卷十七》
京兆尹刘栖楚判罚歌女，御史中丞独孤朗严词谴责，皇上生气，遂贬王源植。
京兆尹刘栖楚决责乐伎，御史中丞独孤朗论之太切，上怒，遂贬源植。
Liu Qichu, the magistrate of Jingzhao, sentenced the courtesan, but the censor-in-chief Dugulang condemned him with harsh words. The emperor was angry, and he demoted Wang Yuanzhi.