《贞观政要·卷八·论刑法》
当时有人上书为他求情说： 高甑生是当年秦王府的功臣，请求陛下宽免他的过错。 
时有上言者曰： 甑生旧秦府功臣，请宽其过。 
At that time, someone sent a letter to intercede for him, saying: Gao Zengsheng was a meritorious subject of Qin王府 back then. I request that Your Majesty pardon his mistakes.