《新唐书·列传·卷九十一》
恰逢庞勋反叛，围攻泗州城。一位不在朝做官的士人辛谠自广陵来见杜慆，劝他送家属出城，只自己留下守城。
会庞勋反，围城，处士辛谠自广陵来见慆，劝出家属，独以身守。
It happened that Pang Xun rebelled and besieged Si Prefecture. A scholar from Guangling, Xin Yan, who was not an official in the court, went to see Du Jue and advised him to send his family out of the city, while he himself stayed to defend it