Are the shares of real estate companies and Islamic banks permissible or impermissible?

If companies or banks engage in prohibited activities such as usury (riba), it is not permissible to purchase their shares. The same ruling applies if their activities are permissible, but they deposit their funds in usurious banks and receive interest that is added to their dividends. The Islamic Fiqh Council of the Muslim World League has stipulated the prohibition of purchasing shares of companies and banks that deal with usury, and the prohibition of investing in companies whose primary purpose is unlawful. Similarly, the Assembly of Muslim Jurists of the Organization of Islamic Cooperation has issued a fatwa (definition) prohibiting investment in companies that occasionally engage in unlawful activities, such as usury. The consideration lies in the names and realities; if the bank or company adheres to the rulings of Islamic law, then there is no objection to purchasing its shares.