‘Ali ibn al-Husayn, peace be upon him, told me: "O Abu Khalid, there will come a time of trials and tribulations, (descending) like a piece of dark night, from which no one will be safe, except the one holding the covenant of Allah. These people will be the guiding lights and the sources of knowledge, whom Allah will have saved from all the dark temptations. As if I see your master, rising above the hill of your Najaf destined for Kufa, with three hundred and some odd over ten men, Jibraeel on his right, Mikaeel on his left, Israfil ahead of him, and with him (is) the Prophet’s standard, unfurled, to whichever people he aims with it, they are destroyed by Allah."