Sulaiman al-A'mash الأعمش / سليمان بن مهران · 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."'

"I came to the Prophet with some other Ansari women to give our pledge. We said: 'O Messenger of Allah, we give you our pledge that we will not associate anything with Allah, we will not steal, we will not have unlawful sexual relations, we will not utter slander, fabricating from between our hands and feet, and we will not disobey you in goodness.' He said: 'As much as you can and are able.' We said: 'Allah and His Messenger…