《新唐书·列传·卷三十二》
十姓君长率领三万骑兵作战，立了功，于是请求进京朝拜。
十姓君长以三万骑战，有功，遂请入朝。
The ten tribal leaders led thirty thousand cavalrymen to battle and made a contribution, so they requested permission to go to the capital to pay homage to the emperor.