text: This man cooks a meal for forty people in a story that he narrates in which he is the only man to respond to a thrice-addressed plea for help.
full_question: This man cooks a meal for forty people in a story that he narrates in which he is the only man to respond to a thrice-addressed plea for help. This man's letters and sermons are collected in the volume The Peak of Eloquence. This man tore down a door to use as a shield in a battle fought against the Jews of Khaybar Oasis, after which he was awarded the appellation "Lion of God." The Kharijites (*) rejected this man's leadership, and assassinated him while he was praying in Kufah, ending the first Fitna. Though some consider this man the last of the four rightly-guided Caliphs, others think he is the first post-Muhammad Imam. For 10 points, name this son-in-law of Muhammad, whose importance is disputed by the Sunnis and Shia.
first_sentence: This man cooks a meal for forty people in a story that he narrates in which he is the only man to respond to a thrice-addressed plea for help.
raw_answer: Ali ibn Abi Talib [or al-Murtaza; or Amir Al-Mu'mineen; or Bab-e-Madinatul-ilm; or Murtadha; or Asadullah; or Haydar]