Dean of Custodian of Two Holy Mosques Institute for Hajj and Umrah Research Dr. Sami bin Yassin Barhamain has received a message of condolence on the passing away of his mother from the Advisor to Custodian of Two Holy Mosques and Emir of Makkah HRH Prince Khalid Al-Faisal bin Abdul-Aziz Al-Saud.