Nine in the second place means

One cannot engage in conflict;

One returns home, gives way.

The people of his town,

Three hundred households,

Remain free of guilt.

In a struggle with an enemy of superior strength, retreat is no disgrace. Timely withdrawal prevents bad consequences. If, out of a false sense of honor, a man allowed himself to be tempted into an unequal conflict, he would be drawing down disaster upon himself. In such a case a wise and conciliatory attitude benefits the whole community, which will then not be drawn into the conflict.