Hexagram 6, Sòng (Conflict): Line 1
讼卦初六 · 天水讼 · 中文版
初六：不永所事，小有言，终吉。
The line (Legge)
The first SIX, divided, shows its subject not perpetuating the matter about which (the contention is). He will suffer the small (injury) of being spoken against, but the end will be fortunate.
Small Image commentary
'He does not perpetuate the matter about which (the contention is):' - contention should not be prolonged. Although 'he may suffer the small (injury) of being spoken against,' his argument is clear.
象曰：不永所事，讼不可长也。虽小有言，其辩明也。
In plain words
Not dragging out the dispute; there is a little talk, but in the end good fortune. The first line is weak and low, without the strength to contend, and it stops early. The Small Image says a dispute should not be drawn out, and although there is some arguing, the rights of the matter are made clear.
Applying it to your situation
If you have just been drawn into an argument, this line suggests saying clearly what needs saying and not letting it drag on. At what point can this matter stop?
Position
A broken (yin) line in the first place, which is a yang (odd) place, so it is not in its proper place. Its partner is line 4; one is yin and the other yang, so they respond to each other.
If this line moves
With this line moving alone, Sòng changes into Hexagram 10 Lǚ (Treading). The Jiaoshi Yilin verse for this change (Chinese): 焦氏易林·讼之履.
The hexagram
Hexagram 6 Sòng (Conflict). The Judgment: Song intimates how, though there is sincerity in one's contention, he will yet meet with opposition and obstruction; but if he cherish an apprehensive caution, there will be good fortune, while, if he must prosecute the contention to the (bitter) end, there will be evil. It will be advantageous to see the great man; it will not be advantageous to cross the great stream.
Next: Line 2
English text: James Legge, The Yi King (Sacred Books of the East, vol. 16, 1882), public domain, as transcribed by the Chinese Text Project. Chinese: the received text. Offered for study and reflection, not as prediction. Plain-English readings and position notes by this site.