Six in the fifth place gives a querent a favourable reading with one firm boundary drawn through it. The line promises good fortune to whoever holds steadily to a regular, unspectacular course, and in the same breath states that the great stream is not to be crossed. Read divinatorially, this describes a position entirely sound for sustaining other people and entirely unsuited to a large venture undertaken on its own strength, and the promise holds only while the distinction is respected.
The structure explains the limit. A yielding stroke occupies an odd place, which the standard rule counts as incorrect, and this position is the seat of authority in the hexagram. Whatever the querent is providing therefore comes through them rather than from them, drawn from the strong line above, which the figure names as the source. That arrangement is stable and can continue indefinitely. It cannot absorb the shock of an undertaking that puts everything at risk at once, because the resources are not the querent's to gamble.
A reading landing here often concerns somebody carrying real responsibility for other people on borrowed or shared means. The counsel is neither to resign the responsibility nor to expand it into something the means will not bear. When the line changes, the upper trigram Gen becomes Xun and the figure becomes Increase, King Wen 42, growth that arrives by giving to those below. The gain, in other words, comes from continuing to provide rather than from crossing the river.