وأما عند تمام العلة فيثبت الحكم لا محالة
Once the operative cause is complete, the ruling necessarily follows.
This is the decisive premise of the position rejecting specification of the legal cause. If an operative cause is complete in all its requirements, this view does not recognize a separate obstruction that entirely prevents the ruling from initially arising.
In analyzing matters such as a sale with an option, jurists can differ over whether the operative cause itself has fully matured. Their specific legal conclusions also depend on further doctrines. This abstract principle does not independently settle every type of contractual option.