Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that the verse «﴿كُنْتُمْ خَيْرَ أُمَّةٍ أُخْرِجَتْ لِلنَّاسِ . . . . .﴾ [آل عمران : 110]» "You are the best nation produced [as an example] for mankind..." refers to those people who migrated to Madinah with the Prophet (peace and blessings be upon him).