Source Studies of Hadith 24item How has Tabari quoted the event of “Yawm al-Dar” in his “Tarikh” book? Which of the Sunni sources have narrated the tradition of Thaqalayn? How has Bukhari quoted Wilayah tradition in his book? Why have not Muslim and Bukhari mentioned the quotation of “Yawm al-Dar”? Where and from whom has this saying “there is no sword except Zulfaqar and no brave youth except Ali (a.s.)” been heard? How has the tradition of “Twelve Caliphs” been quoted in the books of Sunnis? Can you please give me the reference of the hadith that Imam Ali as would finish reciting the Quran while climbing his horse? What is the difference between the ahadees (narrations) recorded in Sunni and Shia books? Is there any narration about twelve caliphs in Musand Ahmad? Is there any narration about twelve caliphs in Sahih Muslim? Is there any narration about twelve caliphs in Sahih Bokhari? In which sources of Sunnis, the Manzalah tradition has been stated? I want to know the source of the following hadith from our books and particularly from the books of our Sunni brothers as I have to tell one of my Sunni brother “awalo maa khalaqallaho nuri ...”. 1. I have heard from a scholar that a number of angels and jinns came to Karbala to help Imam Hussein (A.S.), but he refused to accept their offer. Is it true that they came and offered their help (before the Imam had entered the battlefield)? Does this story have any confirmation in our sources? 2. If such a thing is true, please explain why Imam Hussein refused to accept their help? How can one trust in history? There are always chances that history has been altered and forged for personal interests, so how can we trust in the hadiths that are out there? 12