Chapter 39: The Book of al-Bay'ah
It was narrated that Safwan bin Umayyah said: "I said: 'O Messenger of Allah, they are saying that no one will enter Paradise except a Muhajir."' He said: "There is no more emigration (Hijrah) after the Conquest of Makkah, rather there is Jihad and intention. When you are called to moblize (for Jihad) then do so."
Sunan an-Nasa'i 4169