《汉书·传·杜周传》
适逢大赦，侯史吴出监狱，廷尉王子与少府徐仁审理反叛案件中，都认为桑迁因父谋反受牵连，而侯史吴衹是留宿了桑迁不是藏匿反叛者，而是藏匿随从，即以赦令免侯史吴罪。
会赦，侯史吴自出系狱，廷尉王平与少府徐仁杂治反事，皆以为桑迁坐父谋反而侯史吴臧之，非匿反者，乃匿为随者也。即以赦令除吴罪。
When a general amnesty was granted, Hou Shiwu was released from prison. When the Commandant of Justice, Wang Zi, and the Junior Administrator of the Imperial Household, Xu Ren, examined the treason case, they both believed that while Sang Qian had been implicated because his father had plotted treason, Hou Shiwu had only given him shelter and had not harbored a rebel but rather a fugitive. They therefore exempted Hou Shiwu from punishment in accordance with the amnesty decree.