It wasnarrated from Anas bin Malik that the Messenger of Allah (ﷺ)said:
"The horizons will be opened to you, and you will conquer a citycalled Qazvin. Whoever is stationed there for forty days or fortynights, will have pillars of gold in Paradise, with green chrysoliteand 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.'" (JA)
English reference (JA): Vol. 4, Book 24, Hadith 2780 (JA)
Arabic reference (JA): Book 24, Hadith 2885 (JA)