《元史·本纪·卷一》
海都被拥立之后，率兵攻打押剌伊而部，让他们臣属于自己，势力逐渐增大。海都把营帐排列在八剌合黑河边，跨河建造了一座桥，以便利于往来。
海都既立，以兵攻押剌伊而，臣属之，形势浸大，列营帐于八剌合黑河上，跨河为梁，以便往来。
After Haidu was installed, he led troops to attack the Yirai tribe and made them subordinate to himself, gradually expanding his power. Haidu pitched his tents along the Balahukhe River and built a bridge across the river to facilitate travel.