《元史·列传·卷九十一》
四月十二日，兵抵清河，顺帝遣国师往返问明 清君侧 是指谁，得知必交出搠、朴二人才退兵。
四月十二日，驻于清河，帝遣达达国师问故，往复者数四，言必得搠思监、朴不花乃退兵。
On April 12, his troops reached Qinghe. Emperor Shun sent his national teacher to ask back and forth whom purging the emperor's side referred to. He learned that they would retreat if Bolad handed over the two men, Fensi and Pu.