大壮卦九三
雷天大壮 · 周易第 34 卦
九三：小人用壮，君子用罔，贞厉。羝羊触藩，羸其角。
小象传
象曰：小人用壮，君子罔也。
爻位
九三是阳爻居三位，阳居阳位为当位；与上爻相应，一阴一阳为有应。
京房纳甲：甲辰（土），六亲为兄弟。
此爻变
此爻独动，雷天大壮变为雷泽归妹（第 54 卦）。对应的易林诗：焦氏易林·大壮之归妹。
理雅各英译（1882）
The third NINE, undivided, shows, in the case of a small man, one using all his strength; and in the case of a superior man, one whose rule is not to do so. Even with firm correctness the position would be perilous. (The exercise of strength in it might be compared to the case of) a ram butting against a fence, and getting his horns entangled.
'The small man uses all his strength; in the case of the superior man it is his rule not to do so.'
本卦
雷天大壮（第 34 卦），卦辞：大壮：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。