Six at the beginning of Standstill advises a querent to withdraw now, and not alone. As a changing line it concerns the earliest recognition that a situation has closed, and its counsel is to step back while stepping back is still cheap, taking one's associates along rather than leaving them exposed. Firm correctness is the named condition of the good fortune, which distinguishes this from ordinary self-protection: the line is not deserting anything, it is preserving a capacity that present conditions cannot use.
Flipping this yielding stroke to firm turns the lower trigram Kun into Zhen, thunder, and heaven over thunder gives Innocence, King Wen 25, a hexagram about acting from unpremeditated correctness rather than from calculation. The transformation clarifies the first line's motive. What makes the withdrawal blameless is that it is not a maneuver, and the figure it produces is the one that names spontaneous rightness of intention as the whole basis of good fortune.
A reading landing here is favorable despite the unfavorable hexagram around it. The querent is counseled to read the closing situation accurately, to move early, to bring their people with them, and to keep their intentions plain. Innocence, in the figure this line produces, is not naivety but the absence of any hidden purpose, and it is what keeps an early withdrawal from becoming a defection.