《史记·十二本纪·周本纪》
誓师完毕，前来会合的诸侯军队，共有战车四千辆，在牧野摆开了阵势。
誓已，诸侯兵会者车四千乘，陈师牧野。
After the oath-taking ceremony, the feudal armies that had come to the rendezvous had a total of four thousand chariots, and formed up in battle array on the plain of Muye.