From 'Six at the Top: Deluded return, misfortune' to 'unable to mount an expedition.' Zhengyi says: 'Deluded return, misfortune' means dwelling at the very end of Return, dark and confused regarding return. 'Seeking to return out of delusion' is why it is 'inauspicious.'
'There are calamities and errors' means that being blind to the way of return, there will surely be no blessings or celebrations, only calamities and errors.
'Using it to march an army, there will ultimately be a great defeat' means that because what is done is already inauspicious, using it to deploy troops will bring no victory, only 'ultimately a great defeat.' 'Bringing misfortune to the ruler of the state': yi means to use.
Using this deluded return within one's state violates the ruler's Dao, which is why it is inauspicious.
'Reaching ten years without being able to mount an expedition' means that with the army defeated and the state in misfortune, judging this situation, even after ten years one still cannot launch a punitive campaign.
Because it is deluded and does not return, acting contrary to the ruler's Dao, the Xiang says: 'The misfortune of deluded return is due to acting contrary to the ruler's Dao.'