In the name of Allah most Gracious most Merciful.
Prophet Muhammad (pbuh) was the last of the Prophets sent for our guidance. The Devine Revelations are the final instructions from the Creator to His creations. The aim of the Prophet's mission has been stated in the Quran : "It is Allah Who has sent His Prophet with guidance and the way of truth so that he may make it dominate over all other ways of life howsoever unpleasant it may be to those who assign partners to Allah." (LXI: 9)
The second pledge of Aqaba with 75 persons was in Zilhajja, the 13th year of Prophethood.
The Migration from Macca to the cave Thaur began on Safar 27th, 13th year of Prophethood. The Prophet was 53 years old. He departed from Thaur on 1st Rabi al Awwal, 622 A.D. and arrived at Quba on 8th Rabi al Awwal, the 14th year of Prophethood. He entered Madina on Friday.
The foundation of Masjid e Nabavi was laid in Rabi al Awwal, I Hijrah.