《资治通鉴·宋纪·宋纪七》
北魏国主又派人送去了毛毯和九种盐及胡豆豉作为回报。接着，北魏国主又向刘宋军借乐器，刘义恭回答说： 我们身在军旅，没有带乐器这类东西。 
又借乐器，义恭应之曰： 受任戎行，不赍乐具。 
The ruler of Northern Wei sent blankets, nine kinds of salt, and Hu-style fermented bean curd in return. Then, the ruler of Northern Wei asked to borrow musical instruments from the Liu Song army. Liu Yigong replied: We are in the military and do not carry things like musical instruments.