Kitab-i-Badi/GPT4 635

And what do you say about Isma'il, the son of Imam Sadiq? After he had written to all the provinces that he was the Imam and the leader of the people after him, some events emerged from him and his holiness dismissed him. Zararah and some of his companions asked, "O son of the Messenger of God, this is a great matter. How can someone be the Imam of the people and be right, and then become wrong?" His holiness mentioned the doctrine of Bada' (divine change of decision). Go and look at the narration of Kulayni.