《新唐书·列传·卷七十九》
通王府的长史丁琼，曾经被延赏排挤压制，内心怨恨，就参见李晟说 ：以您的功劳，竟被夺了兵权，地位高的人难得保全生命，为什么不早做打算呢？ 
通王府长史丁琼者，尝为延赏挤抑，内怨望，乃见晟曰： 以公功，乃夺兵柄，夫惟位高者难全，盍早图之？ 
Ding Qiong, the historian of the King of Tong's Mansion, had been excluded and suppressed by Zhang Yanshang, and he was resentful in his heart, so he went to see Li Sheng and said: "With your merits, you have actually been deprived of your military power. It is difficult for people in high positions to preserve their lives. Why don't you do something first? Think it over?"