Is expiation sufficient for fulfilling an oath sworn by a husband to his wife concerning the registration of her share in the land?

The husband's breaking of a promise is a sign of hypocrisy, and he must fulfill his promise unless there is an excuse. If he swore an oath intending to break it, he is sinful. If he intended to fulfill his oath but then something unforeseen caused him to break it, then the expiation atones for his oath. His statement "Its capital is expiation" indicates his trivialization of the oath, which is not permissible. He must beware of this action and should not make a promise unless he knows that he will fulfill it.