《旧唐书·列传·卷九十》
这时吐蕃酋帅兼监统曩贡、腊城等九地节度使婴，笼官马定德，以及他的八十七名大将率领整个部落前来投降。
于是吐蕃酋帅兼监统曩贡、腊城等九节度婴、笼官马定德与其大将八十七人举部落来降。
At this time both Ying, the Tibetan chieftain and inspector and governor of nine locations including Jiandu and Lachen, and Major General Ma Dingde, along with his eighty-seven other top generals, brought their entire tribe to surrender.