The Messenger of Allah ﷺ said, "Horizons will be opened up for you, and a city called Qazwin will be opened up for you. Whoever stations himself on its frontier for forty days or forty nights will have in Paradise a pillar of gold, upon which is a green emerald, upon which is a dome of red ruby, with seventy thousand doors of gold, and upon every door a wife from among the houris."
حدثنا إسمعيل بن أسد حدثنا داود بن المحبر أنبأنا الربيع بن صبيح عن يزيد بن أبان
قال رسول الله ﷺ ستفتح عليكم الآفاق وستفتح عليكم مدينة يقال لها قزوين من رابط فيها أربعين يوما أو أربعين ليلة كان له في الجنة عمود من ذهب عليه زبرجدة خضراء عليها قبة من ياقوتة حمراء لها سبعون ألف مصراع من ذهب على كل مصراع زوجة من الحور العين
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Sourcing. [Its chain is fabricated] It is found in Mawduat by Ibn Jawzi, 2/55, through the route of Ibn Majah. Ibn Jawzi said, "This is without doubt a fabricated hadith." In it is Yazid, no. 1080, and Rabee, no. 70, whose conditions were discussed previously, and Dawud bin Muhabbar is discarded (per Taqrib). Daraqutni, Ahmad bin Hanbal, Ibn Hibban, and others accused him of lying, and Ibn Main's validation of him only adds to his weakness. See the footnote of Fawaid Majmua by Shawkani, page 30, written by Imam Muallimi, may Allah have mercy on him.