«إِلَى لِانْتِهَاءِ الْغَايَةِ»
Ila expresses the end of a limit.
It attaches a terminal place, period, or quantity to an act or ruling. But specifying a boundary and including that boundary within the rule are not the same operation.
The legal result depends on whether ila extends an existing scope up to a point, excludes what lies beyond it, or delays the effect of the utterance until that point.