Action free of contrivance, answerable to what the moment actually gives.
The Judgment
Great success; constancy is beneficial. Departure from what is right brings trouble. It is not favorable to proceed.
元、亨、利、貞。其匪正有眚,不利有攸往。
The Great Image
Thunder moves under heaven, and all beings take part without contrivance. The former kings met the seasons with abundance and nurtured the ten thousand things.
天下雷行,物與无妄。先王以茂對時,育萬物。
Bottom to top
The six lines
Line 1
初九
无妄,往吉。
Without contrivance, going forward is favorable.
Line 1 carries the first uncontrived movement. When its firm base turns yielding, the lower Thunder becomes Earth and the result is Hexagram 12, Heaven separated from Earth.
Without plowing, there is harvest; without clearing a first-year field, there is a mature field. Then proceeding is beneficial.
The traditional reading takes the agricultural image as work without calculating its reward in advance. Changing Line 2 turns lower Thunder into Lake and produces Hexagram 10, Heaven above Lake.
An undeserved disaster: a tethered ox is taken by a passerby. The traveler gains, while the people of the settlement suffer.
At Line 3, gain and loss fall on different people without matching intention. The line turns firm, lower Thunder becomes Fire, and the result is Hexagram 13, Fire below Heaven.
Line 4 begins outer Heaven as a firm line. Its change opens the bottom of that trigram into Wind, producing Hexagram 42, Increase above the same inner Thunder.
An undeserved illness. Here the ancient text counsels against medicine; there is cause for joy.
An unbidden ailment reaches Line 5, the center of outer Heaven. In the traditional reading, it is not caused by wrongdoing and passes without intervention. Changing Line 5 makes Fire above Thunder, Hexagram 21. The medical phrase is a received image, not health guidance.
Though free of wrongdoing, going forward brings trouble. Nothing is beneficial.
At the top line, unforced movement has gone past its span. The firm top yields, Heaven becomes Lake, and Hexagram 17 joins that Lake to Thunder as Following.
A cast determines which part of a hexagram governs the reading. When one line moves, that line is read as the focus; other moving-line counts use different focus rules.