《后汉书·列传·郭杜孔张廉王苏羊贾陆》
当时的人把他与前太守召信臣相比拟，南阳有人称颂说 ：前有召父，后有杜母。 
时人方于召信臣，故南阳为之语曰： 前有召父，后有杜母。 
At that time, the people compared him to Shao Xincheng, the previous Taishou. Nanyang people sang his praises: "Shao Fu in the past, and Du Mu later".