《旧唐书·列传·卷三十七》
太仆正，只不过是中大夫，这样的官也可任命自己的僚属，那么三公九卿，也必然可以自选僚属了。
太仆正，中大夫耳，尚以僚属委之，则三公九卿，亦必然矣。
The official of Taibo is only the middle doctor, such an official can also appoint his subordinates, then the three dukes and nine ministers can also choose their subordinates.