《左传·成公·成公五年》
伯宗问起绛城的事情。押车人说： 梁山崩塌，打算召见伯宗商量。 
问绛事焉，曰： 梁山崩，将召伯宗谋之。 
Bo Zong asked about what happened in Jiangcheng. The escort said: Liang Shan collapsed, and they intended to summon Bo Zong to discuss it.