《资治通鉴·汉纪·汉纪二十六》
郑崇因为董贤贵宠过度而劝谏哀帝，因此深深得罪了哀帝，哀帝多次借公事谴责他。郑崇脖子上长了毒痈，想奏请退休，又不敢提出。
郑崇以贤贵宠过度谏上，由是重得罪，数以职事见责；发疾颈痈，欲乞骸骨，不敢。
Zheng Chong offended Emperor Ai by warning him of the excessive favor he was showing to Dong Xian, and Emperor Ai repeatedly found fault with his official duties. Zheng Chong developed a venomous ulcer on his neck and wanted to ask for retirement but was afraid to put in the request.