وعدم الكفاءة
The lack of legally relevant marital suitability.
In particular Hanafi marriage doctrines, kafāʾa concerns defined suitability considerations that can give certain eligible parties a right to object to, or seek dissolution of, an existing marriage. A contract may have been constituted even though such a subsequent challenge is possible.
The conditions, entitled parties, timing and loss of this right require separate legal analysis. The lesson's point is limited: a defect may give rise to a later challenge to an established contract rather than necessarily preventing its original constitution.