Abstract
Bid'ah stard behind dismembership and dispute of thenation and this causes its failure and weatiness . that it is the reason behind dismembership and dispute is evident through out history . the origin of dispute and wars results from two reasons : the first is the " Imamah " and competition about it . the second is Bid'ah and fanaticisim about it . For that reason , I called my paper " limiting the concept of " Bid'ah" to distract what is alian to the honorable prophet Sunna , and what opposes beliefs , worships and treatment required . Because this topic was very wide , we have tred to include only the important sections lest we should enter in problematic areas . Besides , we have tried to concentrate on their definition and causes and the contradictions among scholars and how to recover it .