In it, he clarified a number of important matters that the preachers should adhere to and follow, because they represent the message of Imam al-Hussayn (peace be upon him), and they seek to explain the truth of what happened to Imam al-Hussayn (peace be upon him), and to clarify the lofty meanings and virtues that he brought according to the biography of his grandfather and his father (Allah's prayers be upon them both).