《北齐书·列传·卷三十六》
第二天早晨，奴出门去了，人们找诗不到，十分着急，邵便一首首地背了出来，有人不承认某诗为自己所作，奴归，拿出诗本对照，不错一字。
旦日奴行，诸人求诗不得，卲皆为诵之，诸人有不认诗者，奴还得本，不误一字。
The next morning, the servants went out and could not find the poems, so they were very anxious. Shao recited the poems one by one from memory. Someone did not admit that a certain poem was his own. When the servants returned, they checked the poems with the original copies and found that they were exactly the same.