《旧唐书·列传·卷四》
窦建德招集引诱逃避征兵和没有家产的，得到了几百人，让孙安祖带领，进高鸡泊当草寇，孙安祖自称将军。
建德招诱逃兵及无产业者，得数百人，令安祖率之，入泊中为群盗，安祖自称将军。
Dou Jiande gathered hundreds of deserters and men without property. He had Sun Anzu lead them. They entered Gaojibo and became outlaws. Sun Anzu called himself a general.