Nothing is asked of the fourth position except that its subject stay as they are. Legge's translation shows one who may be correct and firm, and finds no error in it, a line so spare that the restraint is the whole of its content. After the undeserved calamity of the position below, the text offers no compensation, no remedy, and no advice on recovery. It offers only the instruction to remain correct.
Structurally this is a strong line in an even place, incorrect by the letter of the rule, and it is the first line of the upper trigram Qian, heaven. Commentary reads the mismatch as pressure: a firm stroke standing where yielding is expected is under constant invitation to accommodate itself to its surroundings. The promise of no error attaches precisely to declining that invitation.
Within the hexagram's movement, this is the hinge between what innocence suffers below and what it is trusted with above. The third position showed that being blameless does not prevent loss; the fourth answers the obvious question that raises, whether one should therefore become more calculating, and answers it with a flat refusal. What was right before the misfortune is still right after it. The spareness of the wording is part of the counsel, since there is nothing to add here, and nothing about the subject's conduct has been shown to need adding to.