وجعل عقد النكاح قابلاً للفسخ بالخلع
The marriage contract is described as capable of being dissolved through khulʿ, characterized here as rescission.
Khulʿ is a particular form of marital separation that can involve compensation and agreement. Faskh denotes legal dissolution by rescission; it is not necessarily interchangeable with divorce in every school's terminology.
Jurists differ as to whether khulʿ is classified as a divorce or a rescission and how that classification affects the count of divorces.
The legal-method point: how an act is classified can change its subsequent legal consequences.