الْمَنْزِلَةُ بَيْنَ الْمَنْزِلَتَيْنِ
A position between two positions.
This doctrine treats the committer of a major sin as outside faith but not inside unbelief, assigning an independent status between the two.
In the Sunni position, committing a major sin does not automatically expel a person from faith unless it entails something that invalidates faith itself. The reality of the sin is distinguished from the persistence of fundamental belief.