Is it permissible to open a wedding hall exclusively for women, knowing that the music operator is financially and administratively separate, and I do not incur any material or administrative sin related to the music?

It is permissible to open a wedding hall on condition that what takes place within it is regulated by Sharia guidelines, so that it is not exploited for any forbidden matter such as music, forbidden dancing, or intermingling. Therefore, it is not permissible to allow music to be played, as that constitutes cooperation in sin and aggression.