《资治通鉴·晋纪·晋纪一》
现在是盛夏时节，如果出兵，将遇到雨季，必然要发生疾病、瘟疫，应当等到秋、冬季节再谋划这件事。 
今盛夏出军，水潦将降，必有疾疫，宜须秋、冬图之。 
Now it's midsummer. If we send troops, we will encounter the rainy season. We must have diseases and plagues. We should wait until autumn and winter to plan this matter.