Sufyan bin Sa‘id Ath-Thawri سفيان الثوري · The Book of al-Bay'ah

"I came to the Messenger of Allah with my father Umayyah on the Day of the Conquest (of Makkah) and said: 'O Messenger of Allah, accept my father's pledge for emigration (Al-Hijrah).' The Messenger of Allah said: 'I will accept his pledge to fight in Jihad, for the emigration (Al-Hijrah) has ceased."'

"I heard 'Umar bin Al-Khattab say: 'There is no more emigration (Hijrah) after the death of the Messenger of Allah."'

"When we gave our pledge to the Messenger of Allah to hear and obey, he would say to us: 'In as much as you can".

"The Messenger of Allah said: 'Religion is sincerity (An-Nasihah).' They said: 'To whom, O Messenger of Allah?' he said: 'To Allah, to His Book, to His Messenger, to the imams of the Muslims, and to their common folk."'

"Religion is sincerity, religion is sincerity (Al-Nasihah), religion is sincerity." They said; "To whom, O Messenger of Allah?" He said: "To Allah, to His Book, to His Messenger, to the imams of the Muslims and to their common folk."