Nine at the top concludes not only Before Completion but the entire sixty-four hexagrams of the I Ching. As the final line of the final hexagram, it carries the weight of a closing statement — the last word of wisdom from the ancient sages to all who follow. The line text reads: 'There is drinking of wine in genuine confidence. No blame. But if one wets his head, he loses it, in truth.'
The first half offers permission and grace: after the long journey through all sixty-four hexagrams, it is natural and blameless to celebrate with genuine joy. The wine represents deserved pleasure after sustained effort. But the second half delivers the I Ching's final warning with devastating precision: if you drink until you wet your head — if celebration becomes excess — you will lose your way entirely. The phrase 'loses it in truth' means that even genuine sincerity cannot save someone from the consequences of losing all sense of proportion.
The Commentary drives the point home: 'Drinking wine and wetting the head — one does not know moderation.' This echoes the first line's 'does not know the limit' (bu zhi ji), creating a perfect frame for the entire hexagram. The beginning warns against acting without knowing your limits; the ending warns against indulging without knowing when to stop. Together, they proclaim the I Ching's most fundamental teaching: life is a cycle without end, and maintaining awareness, balance, and moderation at every stage is the deepest wisdom of all.