The work did not move my hand from her hand.

Rabbi Zechariah knows that his wife was not defiled during the entire occupation.
Why would there be a ban on it?
It is good for him that he has not been defiled.
And all the orders of the Sanhedrin are in their proper place.
It's when they have doubts that they rule one way or another.
But what does it matter to him that he knows?