Two historical documents.
Dar Al-Taqreeb.
Shaltut, Mahmoud,Shaykh of al-Azhar.
Cairo :  [s.n.], 
[1968]
1: the introduction of the story of Taqreeb, written by His Eminence, Imam Mahmoud Shaltut, Great Shaykh of al-Azhar -- 2: the official councel (Fatwa) given by His Eminence on the validity of worshipping according to the doctrine of the Imamite Shi'a.