Kitab Al-Nawadir (uncommon reports)

And through the same chain of narrators from Aban bin Taghlib that he said: Narrated to me Abu Hamza Thumali that he said: Abu Ja’far عليه السلام said: “As if I can see Qaim عليه السلام appearing in Kufa at the back of Najaf. When he arrives at Najaf he would unfurl the standard of the Messenger of Allah صلى الله عليه وعلى آله وسلم. Its pole would be a pillar of the Arsh and those who accompany it would be helpers of Allah, the Mighty and Sublime. He would not bring it down for anyone but that the Almighty Allah would destroy that person.” The narrator says: I asked in a polite manner: “Is that flag with him or it would be brought for him?” He said: “It would be brought for him by Jibraeel عليه السلام.”