《宋书·列传·卷五十七》
随从高祖在彭城时，他的妻子郗氏写信来要夏天的衣服，蔡廓回信说： 知道了，你需要夏天时装，给事中自然会给你，不需另寄。 
从高祖在彭城，妻郗氏书求夏服，廓答书曰： 知须夏服，计给事自应相供，无容别寄。 
When he accompanied Emperor Gaozu to Pengcheng, his wife Xi Shi wrote to him asking for summer clothing. Cai Kuo replied: I understand that you need clothes for summer. The Officer of Affairs will provide them for you and there is no need for you to send another letter.