《资治通鉴·宋纪·宋纪三》
奚斤军中的战马染上了温疫，大批死亡，士卒又缺乏粮饷，所以只好深挖沟堑，营造堡垒固守。
斤马多疫死，士卒乏粮，乃深垒自固。
The war horses in Xi Jin's army contracted rinderpest, and a large number of them died. The soldiers also lacked rations, so they had to dig deep trenches and build fortresses to defend themselves.