《资治通鉴·宋纪·宋纪十三》
吏部尚书张悦假装有病，请邓琬到私宅商讨大事，密令左右全副武装，在帐后埋伏，吩咐： 听见我命你们拿酒，便出来动手。 
张悦诈称疾，呼琬计事，令左右伏甲帐后，戒之： 若闻索酒，便出。 
Minister of Personnel Zhang Yue pretended to be sick and invited Deng Wan to his private residence to discuss important matters, then secretly ordered his attendants to arm themselves and ambush behind the tent, and instructed: When you hear me ask you to bring wine, come out and take action.