It is narrated from Sayyiduna Mujashi' bin Mas'ud (may Allah be pleased with him) that he came to the Messenger of Allah (peace and blessings be upon him) to pledge allegiance for emigration, and the Messenger of Allah (peace and blessings be upon him) said: "No, rather we will take the pledge for Islam, for there is no emigration after the Conquest of Makkah; so you will be among those who follow (the first ones) in excellence."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17899