《汉书·纪·宣帝纪》
三月，下诏说： 曾闻舜弟象有罪，舜为帝后封他于有鼻之国。骨肉之亲明而不绝，现封已故昌邑王为海昏侯。 
三月，诏曰： 盖闻象有罪，舜封之，骨肉之亲粲而不殊。其封故昌邑王贺为海昏侯。 
An edict was issued in March: "I have heard that Emperor Shun had sealed his criminal brother Xiang in the country of Youbi after he became the emperor. Family ties are clear and cannot be cut off. Now I seal the late King of Changyi as Marquis of Haihun." 