Muhammad bin Yahya bin Hiban محمد بن يحيى بن حبان · The Book of al-Bay'ah

"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 'Abdullah bin Amr bin Al-As while he was sitting in the shade of Kabah, and the people were gathered around him, and I heard him say: 'While we were with the Messenger of Allah on a journey, we stopped to camp, and some of us were pitching tents, some were competing in shooting arrows, and some were taking the animals out to race them. Then the caller of the Prophet called out: As-Salatu Jamiah (prayer is…