《魏书·列传·卷四》
当初，孝庄帝图谋尔朱荣、元天穆时，忻之秘密上报，到行事的时候，乞求在旁侍奉站立，亲手杀死二人。
初，孝庄之图尔朱荣、元天穆也，忻之密启：临事之日，乞得侍立，手斩二人。
At the beginning, when Xiaozhuangdi went against Erzhu Rong and Yuan Tianmu, Xinzhi reported the news in secret and when the plan was carried out, he asked to stand by to wait for the news and killed the two men with his own hands.