Is a vow broken if a wife disobeys a prohibition after her husband stipulated divorce upon disobedience to his command?
Chapter on Explicit Divorce and Others
Al-Mughni
Book of Divorce
Primary text
If a husband states, 'If I command you and you disobey me, you are divorced,' and subsequently prohibits her from an action, and she disobeys that prohibition, Abu Bakr and Al-Shafi'i hold that the vow is not broken. This is because the condition for divorce was disobedience to his command, not disobedience to his prohibition. The basis is that the disobedience was directed at the prohibition, not the stipulated command.
Supporting text
Abu Al-Khattab holds that the vow is broken if the husband intended that she not disobey him at all, or if the wife is not one who understands the essence of command and prohibition, as the intent is to negate any form of disobedience. Another possibility is that divorce occurs in all cases, because commanding something implies prohibiting its opposite, and prohibiting something implies commanding its opposite; thus, she has disobeyed his command.