Is this Hadith authentic?
إن لله مدائن لا يدخلها إلا من صام رجب
This narration appears in Musnadul Firdaws as part of a longer narration. However, the chain contains a narrator who has been a liar by some Muhaddithun.
Therefore, the Muhaddithun have cited this narration in their books on fabricated Hadiths.
(Musnadul Firdaws: 247, Mizanul I’tidal, vol. 1 pg. 259, number: 959, Dhaylul La-Alil Masnu’ah, Hadith: 753, vol. 2 pg. 617, Tanzihush Shari’ah, vol. 2 pg. 333. Also see Al Adab Fi Rajab, pg. 38)
The narration is not suitable to quote.
Allah Ta’ala has special cities [in the Hereafter], only those who would fast in Rajab will enter them.
And Allah Ta’ala knows best.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar