The second question of Fatwa no. 7807
Q 2: Is the call for rapprochement between religions (Islam - Christianity - Judaism) a legitimate one? Is it permissible for a Muslim believer to support it? I heard that this is done by some scholars in Al-Az-har and other Islamic institutions. Is the call for rapprochement betweenAhl-ul-Sunnah wal-Jama`ah (adherents to the Sunnah and the Muslim mainstream) and theShiites, Druze, Al-Isma`iliyyah, Al-Nusayriyyah and such sects useful for Muslims? Is reconciliation between them possible, although all of these sects entail Shirk (associating others with Allah in His Divinity or worship), offense to the Messenger of Allah (peace be upon him), and hostility towards Islam and Ahl-ul-Sunnah wal-Jama`ah? Is this rapprochement permissible according to Shari`ah?