《战国策·楚四·汗明见春申君》
四蹄伸展膝盖弯曲，尾巴下垂脚掌溃烂，流出的日水洒了一地，全身汗水交流，走到太行的坡道上就不能前进，驾着车辕拉不上去。
蹄申膝折，尾湛胕溃，漉汁洒地，白汗交流，中阪迁延，负辕不能上。
It stretched out its four legs and bent its knees, its tail down and its hooves worn, its slobber spilled all over the ground, its entire body covered in sweat, and as it walked up the slope of Mount Taihang, it could not go any further, and pulling the cart it could not go up.