Does a divorce take effect merely by threatening it when an act is repeated, or does it necessitate an expiation for breaking an oath?

No divorce results from a promise to divorce, nor does it necessitate expiation, nor is it obligatory to fulfill this promise, nor is it even recommended. It is obligatory for the wife to obey her husband in what is right. In cases of her defiance (nushooz), reconciliation should begin with admonition, then abstention (from her bed), and then a non-severe physical discipline.