What is the ruling if a husband swears, 'By God, I will not have intercourse with you except bad intercourse (juma' suu')'?
General Chapter
Al-Mughni
Book of the Oath of Abstention (Ila')
Primary text
If a husband swears, 'By God, I will not have intercourse with you except bad intercourse,' the ruling depends on his specific intent. If he intended intercourse in the anus, he is considered a Muuli because he has sworn off intercourse in the vagina. Similarly, if he intended not to have intercourse with her except outside the vagina, he is considered a Muuli.
Supporting text
If he intended weak intercourse, meaning it does not exceed the mere touching of the circumcised parts (iltaqaa' al-khitaanayn), he is not considered a Muuli because he can fulfill the obligatory intercourse during reconciliation without breaking his oath.