The Hijra is the migration of the Prophet ﷺ Muhammad from Mecca to Medina in 622 CE, the fourteenth year of the mission 1 2. His companions had already begun to emigrate to Medina before him 3 4. The Prophet left his house on the night of 27 Safar in the fourteenth year of prophethood, corresponding to 12/13 September 622 CE 1. He went out of Mecca with Abu Bakr and Abu Bakr's freedman Amir ibn Fuhayra; their guide was Abdullah ibn Urayqit 2. He hid in the cave of Thawr for three nights, and then travelled from the cave to Medina 5 6.
In al-Mubarakpuri's account he reached Quba on Monday 8 Rabi' al-Awwal, corresponding to 23 September 622 CE, and entered Medina on the Friday 7 8. Al-Mas'udi dates his entry into Medina to Monday, when twelve nights of Rabi' al-Awwal had passed, and says that he stayed at Quba until Thursday and set out on Friday 2. Ali ibn Abi Talib remained in Mecca three days after him, until he had handed over what he had been told to hand over, and then joined him 2. The Prophet lived in Medina for ten years 2. The Hijri calendar is counted from the Hijra: in the chapter on dating in Sahih al-Bukhari, Sahl ibn Sa'd says that they did not count from the Prophet's mission or from his death, but only from his arrival in Medina 9.
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