Is it permissible to invest in Banque Misr's Al-Hosn Fund, which is advertised as an investment fund compliant with Islamic Sharia principles, after reviewing its prospectus?

It is not permissible to deal with usurious banks, because it entails assisting them in usury. Allah, the Almighty, says: (And do not cooperate in sin and aggression). As for investing money in funds that adhere to the provisions of Islamic Sharia and the recommendations of the Sharia Supervisory Board, it is permissible in principle.