《宋书·志·卷十七》
现在刘歆遵奉诏命过继，是给刘朗作后嗣，南丰王爵位没有变动，事体是爵位由刘朗、刘歆相传袭，不应告祭太庙，皇帝也不必亲临殿前。 
今歆奉诏出嗣，则成继体，先爵犹存，事是传袭，不应告庙临轩。 
Now, Liu Xin is obeying the imperial edict to be passed on to Liu Lang as his successor, the title of King of Nanfeng has not changed. This is a matter of the title being passed on from Liu Lang to Liu Xin. The temple should not be worshiped and there is no need for the emperor to personally come to the front hall.