Calamity reaches the innocent at the third position, and Legge's translation is careful to keep the two apart. Its subject is free from insincerity, and misfortune happens anyway: a tethered ox is led away by someone passing, and the loss falls on the people of the neighbourhood rather than on the one who took it. Nothing in the line suggests the sufferers brought it on themselves.
The position accounts for the exposure. A yielding line stands here in an odd place, incorrect by the standard rule, at the top of the lower trigram Zhen and directly beneath the strong lines of Qian above. It is the least defended station in the figure, and the tradition reads its trouble as coming from outside rather than from within, which is exactly what the image of a passer by describes.
This line is what keeps Wu Wang honest. A hexagram promising supreme success to natural, unpremeditated rightness could easily be read as a guarantee that the innocent are protected, and the third position denies that flatly. Innocence is a quality of conduct, not a shield. The ox goes, the neighbours bear the cost, and the text declines to explain the loss away as a hidden fault in anyone. That refusal is unusual enough to be worth marking, since the easier reading, that suffering must somehow have been earned, is available here and is deliberately not taken.