Calling a moslem basphemy in the view of theology

What the limit betveen faith and blasphemy and the matter what kind of belieftakes a moslem out of the faith limit has been discussed in the history of Islamic thoughtas a moslem blasphemer. Although its results are known, we tried to find out what kindof resons force people to do such kind of thing.In the first chapter we studied the opinion of the schools about those whocommit a sin with the definition of blasphemy. In the second chapter, we appraised theacceptance of the schools abaut calling a moslem a blasphemer. We studied the reasonsaffecting the traditional blasphemy formation such as interpretation, sect bigotary,political subject. In the third chapter we mentioned the organizations which haveactivities in Egypt. In the fourth chapter we ended our study by inspecting the matter ofblasphemy in the Koran in the conclusion part.Key words: Faith, Blasphemy, Great Sin, Calling a Moslem a Blasphemy.