How can we proove the attack on the door of Fatima Zahra (s.a) because it has only one narration chain of Kitab Sulaym ibn Qays. And The sunni brothers call it weak and many shia scholars has doubted it’s authenticity. Furthermore, there are narration about threatening to burn the door from other chains but the full incidence is only mention in Kitab Sulaym ibn Qays. Are there any other narration chain of the complete incident. If no, how can we prove?