What did the Prophet Muhammad (saw) come to know recently that changed his opinion about driving the Hadi with him and finishing the state of Ihram along with the people?
 Narrated `Aisha:                     Allah's Apostle said, "If I had formerly known what I came to know recently, I would not have driven the Hadi with me and would have finished the state of Ihram along with the people when they finished it."