兑卦九四
兑为泽 · 周易第 58 卦
九四：商兑，未宁，介疾有喜。
小象传
象曰：九四之喜，有庆也。
爻位
九四是阳爻居四位，阳居阴位为不当位；与初爻相应，同为阳爻为无应。
京房纳甲：丁亥（水），六亲为子孙。
此爻变
此爻独动，兑为泽变为水泽节（第 60 卦）。对应的易林诗：焦氏易林·兑之节。
理雅各英译（1882）
The fourth NINE, undivided, shows its subject deliberating about what to seek his pleasure in, and not at rest. He borders on what would be injurious, but there will be cause for joy.
'The joy in connexion with (the subject of) the fourth NINE, (undivided): is due to the happiness (which he will produce).
本卦
兑为泽（第 58 卦），卦辞：兑：亨，利贞。
经文依通行本，已与 Chinese Text Project（ctext.org）逐段比对。卦象是研读与自我反思的材料，不作吉凶断语，也不替代医疗、法律、财务等专业意见。