وَلَا تَجُوزُ إِقَامَتُهَا إِلَّا لِلسُّلْطَانِ، أَوْ لِمَنْ أَمَرَهُ السُّلْطَانُ.
Translation: Only the ruler or one appointed by the ruler may establish it.
The Sultan condition reflects authorized public organization, intended to avoid competing claims to lead a city-wide rite. Other schools do not make this same kind of authorization a validity condition. Its contemporary application requires context.