Chapter 39: The Book of al-Bay'ah
It was narrated that Jabir bin Zaid said: "Ibn 'Abbas said:
'The Messenger of Allah (ﷺ), Abu Bakr and 'Umar were among the Muhajirin (emigrants), because they forsook (hajaru) the idolators, and
some of the Ansar were Muhajirun because Al-Madinah was a land of shirk, and they came to the Messenger of Allah (ﷺ) on the Night of Al-' Aqabah."'
Sunan an-Nasa'i 4166