The Reward of Prayer in Masjid al-Aqsa
The narration (hadith) mentioning the reward, in number, of praying within Masjid al-Aqsa is recorded by Imam Ibn Majah in his Sunan.
The Narration of Imam Bukhari
The narration (hadith), as recorded by Imam Bukhari, is related by Abu Hurairah in which he narrated that the Prophet (Allah bless him and grant him peace) said, “A prayer in this mosque of mine is a thousand times greater than a prayer in other than it, except for the Masjid al-Haram.”
The Narration of Ibn Majah
As for the narration which includes Masjid al-Aqsa, it is recorded by Imam Ibn Majah in his Sunan in which Anas Ibn Malik (Allah be pleased with him) relates that the Messenger of God (Allah bless him and give him peace) said, as part of a longer narration, “… his prayer in Masjid Al-Aqsa is akin to fifty thousand prayers…”
However, in al-Sindi’s commentary on Ibn Majah, it is stated that this narration’s chain of transmission is weak due to the unknown state of one of the narrators. This is confirmed, in different wording, by al-Mundhiri, as quoted by Mulla `Ali al-Qari in his Mirqat al-Mafatih.
The Narration specifically mentioning the Reward of Five Hundred Prayers
Nevertheless, there is a different narration, recorded by Tabarani in his Mu`jam al-Kabir and al-Bazzar in his Musnad, in which Abu’l Darda’ (Allah be pleased with him) relates that the Prophet (Allah bless him and give him peace) said, “The prayer prayed in the Sacred Mosque (Masjid al-Haram) is akin to one hundred thousand prayers, and the prayer in my mosque is akin to one thousand prayers and the prayer in Jerusalem is akin to five hundred prayers.” Ibn Hajar continues that al-Bazzar said its chain of transmission is sound (hasan).
And Allah knows best.
By Shaykh Asif of Halal or Haram Team