Is the separation after intercourse during Ihram obligatory or merely recommended?
Chapter on What the Muhrim Must Avoid and What is Permissible for Him
Al-Mughni
Book of Hajj
Primary text
There are two differing views on the obligation of separation. The first opinion holds that it is not obligatory. This is the view of Abu Hanifa, drawing an analogy that just as making up missed fasting days (Qada Ramadan) after invalidation is not obligatory, so too is this separation. The second view asserts that it is obligatory because the command for separation was narrated from the Companions mentioned, and no dissenting opinion from them is known. Furthermore, being together in that place reminds them of the intercourse, thus leading to its potential recommencement.
Supporting text
The first view is considered stronger, because the wisdom behind separation is safeguarding against the mere thought of recurrence upon recalling the location, and this potential thought is deemed a remote possibility that does not necessitate obligation.