Nasai

(1) The opposition of Ibn Jurayj is that he has made this narration the musnad of Umm al-Mu’minin, Lady Maymunah radi Allahu anha, instead of Ibn Umar radi Allahu anhu, as will be seen in the following narration.

(2) The statement of Imam al-Nasa’i rahimahullah that “I do not know…” is questionable. ‘Ubaydullah and Ayyub have followed Musa in this; they too have made this narration the musnad of Ibn Umar radi Allahu anhu. Therefore, the correct view is that this narration is reported both from Ibn Umar radi Allahu anhu and from Maymunah radi Allahu anha. For this reason, Imam Muslim rahimahullah has transmitted this narration in his Sahih through both routes. See: (Sahih Muslim, al-Hajj, Hadith: 1395)

(3) In other narrations, it is clarified that one prayer in al-Masjid al-Haram is equal to one hundred thousand prayers in ordinary mosques.

Benefit:
By "my mosque" is not meant only that part of the Prophet’s Mosque (Masjid Nabawi) which was included in the mosque during the lifetime of the Prophet sallallahu alayhi wa sallam. Rather, all subsequent extensions made to it are also included. This is because these extensions do not have the status of a separate mosque. Therefore, whether the prayer is performed in the old or new part of Masjid Nabawi, this reward will be attained. However, just as the virtue of the front rows exists in other mosques, it also applies there.