Is it permissible to declare a person who follows one of the traditional Islamic schools of the Ashari as an unbeliever?

Fatwa, posted 4.22.2010, from Egypt, in:
Religious Authority: 
Muhammad Sayyid Tantawi
Website URL: 
http://ammanmessage.com
Fatwa Question or Essay Title: 
Is it permissible to declare a person who follows one of the traditional Islamic schools of the Ashari as an unbeliever? <br></br) [Ashari theology is a school of early Muslim speculative theology founded by the theologian Abu al-Hasan al-Ash'ari The disciples of the school are known as Ash'arites, and the school is also referred to as Asharite school.]
Websites and Institutions: 
Amman Message, (Jordan)

Grand Imam Dr. Muhammad Sayyid Tantawi, Sheikh of Al-Azhar issued that it's not permissible to declare unbeliever any individual or group previously considered Muslim if they believe in God, his books, his prophets, his angels, the Day of Resurrection, destiny and in the 5 pillars of Islam, except if this individual or this group of people declare themselves to be kafir (unbelievers).

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