《后汉书·列传·郭杜孔张廉王苏羊贾陆》
百姓歌颂道： 桑无附枝，两岐长满了麦穗，张君为政，百姓乐不可支。 
百姓歌曰： 桑无附枝，麦穗两岐。张君为政，乐不可支。 
The common people sang in praise: The mulberry tree has no side branches, and both its prongs are filled with wheat. Lord Zhang’s rule brings unalloyed pleasure to the people.