《资治通鉴·唐纪·唐纪十七》
三月，许圉师被贬为虔州刺史，杨德裔因循私屈法被流放庭州，许圉师的儿子许文思、许自然均被撤职。
三月，许圉师再贬虔州刺史，杨德裔以阿党流庭州，圉师子文思、自然并免官。
In March, Xu Yushilei was demoted to the prefect of Qizhou. Yang Deyi was exiled to Tingzhou for following private laws. Xu Yushilei's sons, Xu Wensi and Xu Ziran, were removed from their posts.