When you see the black flags coming from the direction of Khorasan, go to them, even if you have to crawl over snow/ice, for among them is

When you see the black flags coming from the direction of Khorasan, go to them, even if you have to crawl over snow/ice, for among them is the Khalifah of Allah — the Mahdi.

Musnad Ahmad, al-Hakim, Ibn Majah (4084)

— Alexander Dugin

https://dzen.ru/id/641c62de8f2fb34cd94d5713