Is the wife considered sinful for refusing to obey her husband in severing ties with her family and sisters, especially since the husband abandons prayer and commits grave sins, and is it obligatory to obey him in such a case?

The majority of jurists hold that an oath of divorce results in divorce if the condition of the oath is met, and that pronouncing divorce three times counts as three divorces. This is the accepted ruling. So, if the husband's sworn condition of triple divorce is met, a major irrevocable divorce (baynunah kubra) occurs.

As for the ruling on obeying a husband who demands abandonment of family without valid justification, the preponderant opinion is that obedience is not obligatory in such a case.

Furthermore, a wife's desire for her husband's rectitude is commendable, but it should be pursued gently, not with threats. If the husband is impious, abandoning prayer and committing grave sins, it is not advisable to remain with him, and divorce may be the better option in some cases.