《旧唐书·本纪·卷五》
当时左武卫将军黑齿常之奋力作战，大破吐蕃军队，于是被提升为河源军经略大使；并命令李敬玄镇守鄯州，为黑齿常之的声援。
时左武卫将军黑齿常之力战，大破蕃军，遂擢为河源军经略大使；令李敬玄镇鄯州，为之援。
At that time, General Heichi Changzhi of the Left Martial Guard fought bravely, defeated the Tufan army, and was promoted to Ambassador to Jinglue, Heyuan Army; and Li Xingxuan was ordered to guard Shanzhou as a support for Heichi Changzhi.