Muhammad arrived in Medina after the hijra from Mecca in 622.
This event , the Hijra , marks the beginning of the Islamic calendar , also known as the Hijri Calendar.
The Hegira or Hijrah -LRB- -LSB- -RRB- is the migration or journey of the Islamic prophet Muhammad and his followers from Mecca to Yathrib , later renamed by him to Medina , in the year 622.
