What is the ruling on Mudarabah and investing in Al Rajhi Bank shares?

It is permissible to invest in Al-Rajhi Bank shares if they are pure (non-mixed) shares, and Dr. Muhammad Al-Osaimi has listed them among the permissible shares. As for Al-Rajhi funds that deal with local or Gulf stocks, they are not restricted to pure shares; rather, they deal in mixed shares, which most scholars consider impermissible to trade in.