What is the legal ruling on participating with one's brother with his money in a hall that hosts weddings and where musical bands perform, along with a cafeteria, a photography studio, and a cinema? And what is the ruling on his profits from that? And is he permitted to take his capital if he leaves this work, or should he abandon all the money?

It is not permissible to participate in financing a wedding hall if its activities include forbidden things such as intermingling (free mixing of genders) and music, due to the severe warnings mentioned in this regard, such as the saying of the Prophet, peace and blessings be upon him: "There will be people from my Ummah who will consider unlawful sexual intercourse, silk, wine, and musical instruments lawful," and his saying: "Two sounds are cursed in this world and the Hereafter: a wind instrument at a time of joy, and wailing at a time of misfortune."

The partner must withdraw their funds (capital and profit), and they are entitled to the capital only. As for the profit, they should dispose of it by giving it to the poor, the needy, and other charitable causes, in accordance with the Almighty's saying: "And if you repent, you may have your principal – [thus] you do no wrong, nor are you wronged." And they must hasten to repent.