The Masjid of the two Qiblah's or the Masjid of Bani Salama, so called because when the Divine order came to change the Qibla from Masjid al-Aqsa(Jerusalem) to Ka'aba(Makkah), the prophet Muhammed (S.A.W) and his Companions who were in the middle of a Dhuhr prayer (afternoon prayer) and had already prayed two Rakah's turned Makkah and prayed the next two Rakah's in that direction. Its happen on Mon.15th Rajab 2 AH.