《资治通鉴·汉纪·汉纪十九》
本来，严延年曾与义一起当过丞相史，实际上对他很亲厚，这次又送给义非常丰厚的礼品。
延年本尝与义俱为丞相史，实亲厚之，馈遗之甚厚。
Originally, Yan Yannian had served alongside Yi as an assistant of the Prime Minister and was actually very close to him, and this time he even sent Yi very generous gifts.