《资治通鉴·唐纪·唐纪三》
以后，王世充便渐渐变得骄横了，有一次在宫中吃了赏赐的食物，回到家里大吐，他便怀疑食物被人下了毒，自那以后，王世充就不再上朝拜谒了。
既而渐骄横，尝赐食于禁中，还家大吐，疑遇毒，自是不复朝谒。
After that, Wang Shichong gradually became arrogant. Once, he ate a reward meal in the palace and then threw up badly when he returned home. He suspected that the food was poisoned, and from then on, Wang Shichong no longer went to the court to pay homage.