《汉书·传·韦贤传》
这时宪王还没有到自己的封国就职，玄成接受韶令，与太子太傅萧望之以及治《五经》的儒士们在石渠合讨论经书的异同之处，写成条目奏对皇上的询问。
是时，王未就国，玄成受诏，与太子太傅萧望之及《五经》诸儒杂论同异于石渠阁，条奏其对。
At this time, King Xian had not yet taken up his position in his fiefdom. Xuancheng accepted the imperial decree and together with the crown prince's tutor Xiao Wangzhi and the Confucianists who mastered the Five Classics discussed the differences of the classics in Shiqu and wrote a list to answer the Emperor's inquiries.