Hadith 417:0
Qays ibn ‘A’idh reported: The Messenger of Allah (ﷺ) said: "Indeed, the people of the East will come, and they will have black flags. They will kill everyone who opposes them, and they will not be stopped until they hand over the authority to a man from my family (Ahl al-Bayt). So when you see them, give them your pledge of allegiance, even if you have to crawl over snow, for he is the Caliph of Allah, the Mahdi."
### || حديث قيس بن عائذ #