The correct meaning: Nine in the Fourth Place unreasonably encroached upon the initial line, but the initial line could clearly argue the principle, so Nine in the Fourth Place could not win the dispute.
'He turns back and yields to fate, changes, and rests in perseverance: good fortune.' The correct meaning: 'Turns back and yields to fate'—'turns back' means returns; 'yields to' means approaches.
Nine in the Fourth Place cannot win the conflict; if it can return to the original principle, change its former mandate to contend with the initial line, transform itself, rest, and cease litigating, it is called 'turning back and yielding to fate, changing.'
'Rests in perseverance: good fortune' means that having returned to the original principle and changed its former litigious mandate, it attains the good fortune of peaceful, correct abiding.
Commentary: From 'Dwelling above to contend against those below' to 'good fortune will follow.' The correct meaning: 'If one can turn back and follow the fundamental principle' explains the meaning of 'turns back and yields to.'
'Turns back' means returning; 'yields to' means following. The fundamental principle refers to the original reason for not contending with the initial line.
One must turn back and follow this original non-contentious principle, hence 'turn back and follow the fundamental principle.' 'Change the previous mandate' explains 'changing the mandate.'
渝 means to change; the commentary simply transposes the word 'change' before 'mandate,' hence 'change the previous mandate.' The 'previous mandate' refers to the former command to contend with the initial line, which is now changed.
'Abide in restful perseverance without encroachment' means the fourth rests in uprightness and no longer encroaches on the initial line. ''Practicing benevolence depends on oneself,' and good fortune will follow'—'practicing benevolence depends on oneself' is from the Analects.
The initial line did not provoke oneself, and oneself does not encroach upon the initial line; this is the way of benevolence and righteousness, which arises freely from oneself.