From Abi Nadrah al-Mundhir Ibn Malik Ibn Qut’ah who said, ‘Someone who heard the sermon of the Messenger of Allaah (صلى الله عليه وسلم) in the middle of the days of al-Tashriq informed me that he said,
“O people! Indeed, your Lord is one and your father is one. Indeed, an Arab has no excellence over a non-Arab, nor does a non-Arab have any excellence over an Arab, nor does a white person have any excellence over a black one, nor does a black person have any excellence over a white one, except through taqwa. Have I conveyed the message?” They replied, ‘You have conveyed it O Messenger of Allaah (صلى الله عليه وسلم).”
Related by Ahmad in al-Musnad (5/411), ‘Abdullah Ibn al-Mubarak in al-Musnad (no. 239) and al-Bayhaqi in Shu’ab al-Iman (4/289). Refer to al-Fath al-Rabbani (2/226) of al-Sa’ati. It was authenticated by al-Albani in Ghayah al-Maram (no. 313)
Source: Prophetic Ahadith in Condemnation of Racism, The Noble Shaykh Dr. Abl-al-Salam Ibn Burjis Ibn Nasir Al-‘Abd al-Karim (d.1425H), Translation by Maaz Qureshi, Sunnah Publishing, The Seventh Hadith, p.28.