《宋书·列传·卷九十五》
柔然派来的使者刚到，说的都符合实际，在远方表示忠诚，发誓和我们共同对付魏国，远近盼望我们，应该努力赴援，况且雨水连绵，水满江河，舟船方便，光复的时期，正是今日。
芮芮间使适至，所说并符，远输诚款，誓为犄角。遐迩注情，既宜赴奖，且水雨丰澍，舟楫流通，经略之会，实在兹日。
The envoy sent by Rouran just arrived. What you said is true. You expressed your loyalty from a distant place and vowed to fight against Wei with us. People far and near are looking forward to us. We should make every effort to rescue them. Moreover, the rain has been incessant, the river is full, and the boat is convenient. The period of restoration is today.