Musnad Ahmad 2451

It was narrated from Ibn 'Abbas (رضي الله عنه) concerning the words of Allah, "You (true believers in Islamic Monotheism, and real followers of Prophet Muhammad (ﷺ) and his Sunnah) are the best of peoples ever raised up for mankind; you enjoin Al-Ma'roof (i.e., Islamic Monotheism and all that Islam has ordained) and forbid Al-Munkar (polytheism, disbelief and all that Islam has forbidden)" [Al 'Imran 3:110] that he said: They are the ones who migrated with Muhammad (ﷺ) to Madinah. Abu Nu'aim said: with the Prophet (ﷺ).