Jarir bin 'Abdullah al-Bajli · The Book of al-Bay'ah

"A man said: 'O Messenger of Allah! Which emigration (Hijrah) is best?' He said: 'To leave what your Lord, the Mighty and Sublime, dislikes.' He said: 'There are two kinds of emigration, the emigration of the town dweller and the emigration of the Bedouin. As for the Bedouin, when he is called (to fight in Jihad) he must respond, and he must obey when he is commanded, and as for the town dweller, he is the one who is more…

"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."'

"When I wanted to give pledge to the Messenger of Allah, I said: 'O Messenger of Allah, women helped me (in wailing for the dead) during the Jahiliyyah; shall I go and help her (in wailing) and then come to you and give you my oath of allegiance?' He said: 'Go and help her.' So I went and helped her, then I came, and gave my pledge to the Messenger of Allah."