《史记·七十列传·货殖列传》
而子贡却乘坐四马并辔齐头牵引的车子，携带束帛厚礼去访问、馈赠诸侯，所到之处，国君与他只行宾主之礼，不行君臣之礼。
子贡结驷连骑，束帛之币以聘享诸侯，所至，国君无不分庭与之抗礼。
However, Zigong took a carriage drawn by four horses abreast and carried a bundle of silk and thick presents to visit and give gifts to the vassal lords. Wherever he went, the lords would only treat him as a guest but not as a subject.