NEXT TIME QUOTE THE FULL HADITH MR POPAT
IT goes like this
“From Hazrat Aisha (Allah be pleased with her): The Prophet(SAW) said I am the last Prophet and my mosque is the last mosque among the mosques of all the prophets”. (Kanzul Ummal, Vol.12, p.270, Hadith No.34999)
among the mosques of all the prophets. Very good. He SAW surely built a mosques which made it last among all the prophet's mosques. Mosques built after Masjid e nabwi should be such mosques which calls people towards prayers and towards Allah, no other mosque after masjid e nabwi will be built which invites people to worship anyone else but Allah. Same goes when Muhammad PBUH says that I am the last of the prophets, meaning.. he SAW is the last prophet but prophets can come after Him which are amongst His own Ummah.