It was
narrated from Anas bin Malik that the Messenger of Allah (ﷺ)
said:
“The horizons will be opened to you, and you will conquer a city
called Qazvin. Whoever is stationed there for forty days or forty
nights, will have pillars of gold in Paradise, with green chrysolite
and topped by a dome of rubies. It will have seventy thousand doors,
at each door will be a wife from among the wide-eyed houris.’”