Validation of Hadith of Nation (Ummah) imprecation; its Source and Concept

Nation (Ummah) imprecation Hadith belongs to Ashrat al-saah in which the imprecation of the early Islamic nations by the next generations is considered to be one of the causes of Muslims’ Involvement in the last time. The mentioned hadiths that have Sunni narrators have often been transmitted by Shiykh Saduq and Shiykh Tusi. Similarity of the words and sanad of Nation imprecation Hadith in Sunni and Shiite books, say this hadith maybe transmitted from Sunni sources to those of Shiite. Due to their lack of Imami belief in justice to all companions of the Prophet, and the imprecation of some of them on the other hand, some Sunni scholars have criticized Shiite scholars who have cited the Nation imprecation Hadith. But all asnad and chains of nation imprecation Hadith are weak. By accepting the relationship between the Nation imprecation and the last time, the nation imprecation Hadith may indicate the imprecation of Ali (pbuh) by the Umayyads, Kharijites and nawasib.