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Hexagram 42
益Yì
Added capacity directed toward work beyond the self.
Proceeding is beneficial. Crossing the great river is beneficial.
利有攸往，利涉大川。
Wind and thunder: Increase. The exemplary person moves toward good when it appears and corrects a fault when it is found.
風雷，益。君子以見善則遷，有過則改。
Bottom to top
Line 1
利用為大作，元吉，无咎。
Undertaking a great work is beneficial. A greatly favorable result is needed for there to be no fault.
Line 1 receives support despite its low position and is charged with a great undertaking. The traditional reading makes freedom from fault depend on carrying it out well. Changing Line 1 makes Earth below Wind, Hexagram 20.
Read Line 1 in contextLine 2
或益之十朋之龜，弗克違，永貞吉。王用享于帝，吉。
Someone adds ten pairs of tortoise shells; the gift cannot be refused. Lasting constancy is favorable. The king makes an offering to the High Deity. Favorable.
At Line 2, the valuable gift repeats the image in Hexagram 41 Line 5. Zhu Xi gives the two passages the same gift interpretation; here lasting constancy and the king’s offering are added. Changing Line 2 makes Lake below Wind, Hexagram 61.
Read Line 2 in contextLine 3
益之，用凶事，无咎。有孚中行，告公用圭。
Increase is used in calamitous affairs. No fault. With trust and centered conduct, report to the duke using a jade tablet.
Calamitous affairs and a formal report belong to Line 3, the edge of inner Thunder. Its change makes Fire below Wind and produces Hexagram 37.
Read Line 3 in contextLine 4
中行，告公從，利用為依遷國。
Following a centered course, one reports to the duke and is heeded. It is beneficial to provide support in moving the capital.
Line 4 opens outer Wind with a report to the duke and support for moving the capital. Changing it to firm makes Heaven above Thunder and yields Hexagram 25.
Read Line 4 in contextLine 5
有孚惠心，勿問元吉。有孚惠我德。
A sincere, benevolent heart. Do not ask: greatly favorable. My goodness is met with sincere goodwill.
At Line 5, goodwill moves in both directions: a sincere intention to benefit others meets a sincere response. That reciprocity is the traditional reading of the repeated 有孚. Changing the firm center makes Mountain above Thunder, Hexagram 27.
Read Line 5 in contextLine 6
莫益之，或擊之，立心勿恆，凶。
No one brings increase; someone strikes instead. The heart is not constant. Misfortune.
Line 6 seeks increase but receives none and faces a blow instead. The text associates this with an inconstant heart. Changing Line 6 makes Water above Thunder, Hexagram 3.
Read Line 6 in contextOne line away
One classical protocol
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.
Read the changing-line protocol
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