A Comparative Study of Shaykh Saduq's and Shaykh Mufid's Views with Sayyid Morteza's and Shaykh Tusi's Views about Bada'

Of the beliefs of the Shiites, which differentiate them from the Sunnis, is Bada'. Important periods of explaining Bada' among the scholars of Imamiyya, are fourth and fifth centuries (AH), with the authority of Shaykh Saduq, Shaykh Mufid, Sayyid Morteza and Shaykh Tusi. They discussed the different aspects of the Bada's doctrine and have both the same and different views about that. Therefore, this research, using a descriptive-analytical method, seeks to adapt the views of Shaykh Sadoogh and Shaykh Mufid with the views of Sayyid Mortaza and Shaykh Tusi on Bada's belief. For this purpose, the views and approaches of these four scholars on the doctrine of Bada' are analyzed and compared in eleven parts including defining the Bada', allowed and unallowable Bada', relation of the Beda and abolishment, Bada' in real or virtual sense, Bada' and the God's will, Bada' in conditional actions, Bada' in unknown actions, Bada' and the Jews, and the traditions of Beda and the effect of Mutazilite thought in the attitude towards Bada'. Eventually it became clear that they had a common ground. On the one hand, there is more sharing between Shaykh Saduq and Shaykh Mufid. On the other hand, there has been more sharing between Sayyid Morteza and Shaykh Tusi